diff --git a/docs/index.html b/docs/index.html
index a6634c30..b6b6ce09 100644
--- a/docs/index.html
+++ b/docs/index.html
@@ -76,7 +76,7 @@
         </div>
     </div>
 </div>
-<div style="margin-top:20px;text-align:center;" class="ui-font"><a class="btn btn-large" type="button" href="#get-started" style="margin-right:8px;">Get Started</a><div class="clearfix" style="display:inline-block;vertical-align:middle;"><a class="btn btn-large btn-with-count" role="button" href="https://github.com/nathancahill/Split.js/"><svg class="octicon" version="1.1" viewBox="0 0 14 16" ariahidden="true" width="20" height="20" children=""><path fillRule="evenodd" d="M14 6l-4.9-.64L7 1 4.9 5.36 0 6l3.6 3.26L2.67 14 7 11.67 11.33 14l-.93-4.74z"></path></svg> Star</a><a class="social-count" style="display:inline-block;vertical-align:middle;">3,253</a></div></div></div></header>
+<div style="margin-top:20px;text-align:center;" class="ui-font"><a class="btn btn-large" href="#get-started" style="margin-right:8px;">Get Started</a><div class="clearfix" style="display:inline-block;vertical-align:middle;"><a class="btn btn-large btn-with-count" role="button" href="https://github.com/nathancahill/Split.js/"><svg class="octicon" version="1.1" viewBox="0 0 14 16" ariahidden="true" width="20" height="20" children=""><path fillRule="evenodd" d="M14 6l-4.9-.64L7 1 4.9 5.36 0 6l3.6 3.26L2.67 14 7 11.67 11.33 14l-.93-4.74z"></path></svg> Star</a><a class="social-count" style="display:inline-block;vertical-align:middle;">3,253</a></div></div></div></header>
 <main class="container">
 Split.js is a <b>< 2kb unopinionated utility</b> for resizeable split views (also called panes or frames). It <b>handles weird edge cases</b> so you don't have to. Split.js is <b style="white-space: nowrap">CSS-driven</b>,
 only using JS to recalculate CSS styles on drag. Split.js <b>does not attach any window event listeners</b>, instead relying on CSS for the layout when the window size changes. This keeps the JS overhead extremely low.
@@ -296,7 +296,7 @@ <h2>Docs &amp; API</h2>
 </main>
 <div class="container" style="margin: 30px auto">&copy; 2018 <a href="http://nathancahill.com/">Nathan Cahill</a>. <a href="http://github.com/nathancahill/Split.js/#license">MIT license</a>.</div>
 <script async defer type="text/javascript" src="./web-font.js"></script>
-<script type="text/javascript" src="./split.js"></script>
+<script type="text/javascript" src="./split.min.js"></script>
 <script>
 Split(['#logo-1', '#logo-2'], {
     minSize: 0,
diff --git a/docs/split.js b/docs/split.js
deleted file mode 100644
index 38382d66..00000000
--- a/docs/split.js
+++ /dev/null
@@ -1,560 +0,0 @@
-/*! Split.js - v1.4.0 */
-
-(function (global, factory) {
-	typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
-	typeof define === 'function' && define.amd ? define(factory) :
-	(global.Split = factory());
-}(this, (function () { 'use strict';
-
-// The programming goals of Split.js are to deliver readable, understandable and
-// maintainable code, while at the same time manually optimizing for tiny minified file size,
-// browser compatibility without additional requirements, graceful fallback (IE8 is supported)
-// and very few assumptions about the user's page layout.
-var global = window;
-var document = global.document;
-
-// Save a couple long function names that are used frequently.
-// This optimization saves around 400 bytes.
-var addEventListener = 'addEventListener';
-var removeEventListener = 'removeEventListener';
-var getBoundingClientRect = 'getBoundingClientRect';
-var HORIZONTAL = 'horizontal';
-var NOOP = function () { return false; };
-
-// Figure out if we're in IE8 or not. IE8 will still render correctly,
-// but will be static instead of draggable.
-var isIE8 = global.attachEvent && !global[addEventListener];
-
-// Helper function determines which prefixes of CSS calc we need.
-// We only need to do this once on startup, when this anonymous function is called.
-//
-// Tests -webkit, -moz and -o prefixes. Modified from StackOverflow:
-// http://stackoverflow.com/questions/16625140/js-feature-detection-to-detect-the-usage-of-webkit-calc-over-calc/16625167#16625167
-var calc = (['', '-webkit-', '-moz-', '-o-'].filter(function (prefix) {
-    var el = document.createElement('div');
-    el.style.cssText = "width:" + prefix + "calc(9px)";
-
-    return (!!el.style.length)
-}).shift()) + "calc";
-
-// Helper function checks if its argument is a string-like type
-var isString = function (v) { return (typeof v === 'string' || v instanceof String); };
-
-// Helper function allows elements and string selectors to be used
-// interchangeably. In either case an element is returned. This allows us to
-// do `Split([elem1, elem2])` as well as `Split(['#id1', '#id2'])`.
-var elementOrSelector = function (el) {
-    if (isString(el)) {
-        var ele = document.querySelector(el);
-        if (!ele) {
-            throw new Error(("Selector " + el + " did match a DOM element"))
-        }
-        return ele
-    }
-
-    return el
-};
-
-// Helper function gets a property from the properties object, with a default fallback
-var getOption = function (options, propName, def) {
-    var value = options[propName];
-    if (value !== undefined) {
-        return value
-    }
-    return def
-};
-
-// Default options
-var defaultGutterFn = function (i, gutterDirection) {
-    var gut = document.createElement('div');
-    gut.className = "gutter gutter-" + gutterDirection;
-    return gut
-};
-
-var defaultElementStyleFn = function (dim, size, gutSize) {
-    var style = {};
-
-    if (!isString(size)) {
-        if (!isIE8) {
-            style[dim] = calc + "(" + size + "% - " + gutSize + "px)";
-        } else {
-            style[dim] = size + "%";
-        }
-    } else {
-        style[dim] = size;
-    }
-
-    return style
-};
-
-var defaultGutterStyleFn = function (dim, gutSize) { return (( obj = {}, obj[dim] = (gutSize + "px"), obj ))
-    var obj; };
-
-// The main function to initialize a split. Split.js thinks about each pair
-// of elements as an independant pair. Dragging the gutter between two elements
-// only changes the dimensions of elements in that pair. This is key to understanding
-// how the following functions operate, since each function is bound to a pair.
-//
-// A pair object is shaped like this:
-//
-// {
-//     a: DOM element,
-//     b: DOM element,
-//     aMin: Number,
-//     bMin: Number,
-//     dragging: Boolean,
-//     parent: DOM element,
-//     isFirst: Boolean,
-//     isLast: Boolean,
-//     direction: 'horizontal' | 'vertical'
-// }
-//
-// The basic sequence:
-//
-// 1. Set defaults to something sane. `options` doesn't have to be passed at all.
-// 2. Initialize a bunch of strings based on the direction we're splitting.
-//    A lot of the behavior in the rest of the library is paramatized down to
-//    rely on CSS strings and classes.
-// 3. Define the dragging helper functions, and a few helpers to go with them.
-// 4. Loop through the elements while pairing them off. Every pair gets an
-//    `pair` object, a gutter, and special isFirst/isLast properties.
-// 5. Actually size the pair elements, insert gutters and attach event listeners.
-var Split = function (ids, options) {
-    if ( options === void 0 ) options = {};
-
-    var dimension;
-    var clientAxis;
-    var position;
-    var elements;
-
-    // All DOM elements in the split should have a common parent. We can grab
-    // the first elements parent and hope users read the docs because the
-    // behavior will be whacky otherwise.
-    var firstElement = elementOrSelector(ids[0]);
-    var parent = firstElement.parentNode;
-    var parentFlexDirection = global.getComputedStyle(parent).flexDirection;
-
-    // Set default options.sizes to equal percentages of the parent element.
-    var sizes = getOption(options, 'sizes') || ids.map(function () { return 100 / ids.length; });
-
-    // Standardize minSize to an array if it isn't already. This allows minSize
-    // to be passed as a number.
-    var minSize = getOption(options, 'minSize', 100);
-    var minSizes = Array.isArray(minSize) ? minSize : ids.map(function () { return minSize; });
-    var gutterSize = getOption(options, 'gutterSize', 10);
-    var snapOffset = getOption(options, 'snapOffset', 30);
-    var direction = getOption(options, 'direction', HORIZONTAL);
-    var cursor = getOption(options, 'cursor', direction === HORIZONTAL ? 'ew-resize' : 'ns-resize');
-    var gutter = getOption(options, 'gutter', defaultGutterFn);
-    var elementStyle = getOption(options, 'elementStyle', defaultElementStyleFn);
-    var gutterStyle = getOption(options, 'gutterStyle', defaultGutterStyleFn);
-
-    // 2. Initialize a bunch of strings based on the direction we're splitting.
-    // A lot of the behavior in the rest of the library is paramatized down to
-    // rely on CSS strings and classes.
-    if (direction === HORIZONTAL) {
-        dimension = 'width';
-        clientAxis = 'clientX';
-        position = 'left';
-    } else if (direction === 'vertical') {
-        dimension = 'height';
-        clientAxis = 'clientY';
-        position = 'top';
-    }
-
-    // 3. Define the dragging helper functions, and a few helpers to go with them.
-    // Each helper is bound to a pair object that contains its metadata. This
-    // also makes it easy to store references to listeners that that will be
-    // added and removed.
-    //
-    // Even though there are no other functions contained in them, aliasing
-    // this to self saves 50 bytes or so since it's used so frequently.
-    //
-    // The pair object saves metadata like dragging state, position and
-    // event listener references.
-
-    function setElementSize (el, size, gutSize) {
-        // Split.js allows setting sizes via numbers (ideally), or if you must,
-        // by string, like '300px'. This is less than ideal, because it breaks
-        // the fluid layout that `calc(% - px)` provides. You're on your own if you do that,
-        // make sure you calculate the gutter size by hand.
-        var style = elementStyle(dimension, size, gutSize);
-
-        // eslint-disable-next-line no-param-reassign
-        Object.keys(style).forEach(function (prop) {
-            el.style[prop] = style[prop];
-        });
-    }
-
-    function setGutterSize (gutterElement, gutSize) {
-        var style = gutterStyle(dimension, gutSize);
-
-        // eslint-disable-next-line no-param-reassign
-        Object.keys(style).forEach(function (prop) {
-            gutterElement.style[prop] = style[prop];
-        });
-    }
-
-    // Actually adjust the size of elements `a` and `b` to `offset` while dragging.
-    // calc is used to allow calc(percentage + gutterpx) on the whole split instance,
-    // which allows the viewport to be resized without additional logic.
-    // Element a's size is the same as offset. b's size is total size - a size.
-    // Both sizes are calculated from the initial parent percentage,
-    // then the gutter size is subtracted.
-    function adjust (offset) {
-        var a = elements[this.a];
-        var b = elements[this.b];
-        var percentage = a.size + b.size;
-
-        a.size = (offset / this.size) * percentage;
-        b.size = (percentage - ((offset / this.size) * percentage));
-
-        setElementSize(a.element, a.size, this.aGutterSize);
-        setElementSize(b.element, b.size, this.bGutterSize);
-    }
-
-    // drag, where all the magic happens. The logic is really quite simple:
-    //
-    // 1. Ignore if the pair is not dragging.
-    // 2. Get the offset of the event.
-    // 3. Snap offset to min if within snappable range (within min + snapOffset).
-    // 4. Actually adjust each element in the pair to offset.
-    //
-    // ---------------------------------------------------------------------
-    // |    | <- a.minSize               ||              b.minSize -> |    |
-    // |    |  | <- this.snapOffset      ||     this.snapOffset -> |  |    |
-    // |    |  |                         ||                        |  |    |
-    // |    |  |                         ||                        |  |    |
-    // ---------------------------------------------------------------------
-    // | <- this.start                                        this.size -> |
-    function drag (e) {
-        var offset;
-        var a = elements[this.a];
-        var b = elements[this.b];
-
-        if (!this.dragging) { return }
-
-        // Get the offset of the event from the first side of the
-        // pair `this.start`. Supports touch events, but not multitouch, so only the first
-        // finger `touches[0]` is counted.
-        if ('touches' in e) {
-            offset = e.touches[0][clientAxis] - this.start;
-        } else {
-            offset = e[clientAxis] - this.start;
-        }
-
-        // If within snapOffset of min or max, set offset to min or max.
-        // snapOffset buffers a.minSize and b.minSize, so logic is opposite for both.
-        // Include the appropriate gutter sizes to prevent overflows.
-        if (offset <= a.minSize + snapOffset + this.aGutterSize) {
-            offset = a.minSize + this.aGutterSize;
-        } else if (offset >= this.size - (b.minSize + snapOffset + this.bGutterSize)) {
-            offset = this.size - (b.minSize + this.bGutterSize);
-        }
-
-        // Actually adjust the size.
-        adjust.call(this, offset);
-
-        // Call the drag callback continously. Don't do anything too intensive
-        // in this callback.
-        getOption(options, 'onDrag', NOOP)();
-    }
-
-    // Cache some important sizes when drag starts, so we don't have to do that
-    // continously:
-    //
-    // `size`: The total size of the pair. First + second + first gutter + second gutter.
-    // `start`: The leading side of the first element.
-    //
-    // ------------------------------------------------
-    // |      aGutterSize -> |||                      |
-    // |                     |||                      |
-    // |                     |||                      |
-    // |                     ||| <- bGutterSize       |
-    // ------------------------------------------------
-    // | <- start                             size -> |
-    function calculateSizes () {
-        // Figure out the parent size minus padding.
-        var a = elements[this.a].element;
-        var b = elements[this.b].element;
-
-        var aBounds = a[getBoundingClientRect]();
-        var bBounds = b[getBoundingClientRect]();
-
-        this.size = aBounds[dimension] + bBounds[dimension] + this.aGutterSize + this.bGutterSize;
-        this.start = aBounds[position];
-    }
-
-    // stopDragging is very similar to startDragging in reverse.
-    function stopDragging () {
-        var self = this;
-        var a = elements[self.a].element;
-        var b = elements[self.b].element;
-
-        if (self.dragging) {
-            getOption(options, 'onDragEnd', NOOP)();
-        }
-
-        self.dragging = false;
-
-        // Remove the stored event listeners. This is why we store them.
-        global[removeEventListener]('mouseup', self.stop);
-        global[removeEventListener]('touchend', self.stop);
-        global[removeEventListener]('touchcancel', self.stop);
-        global[removeEventListener]('mousemove', self.move);
-        global[removeEventListener]('touchmove', self.move);
-
-        // Clear bound function references
-        self.stop = null;
-        self.move = null;
-
-        a[removeEventListener]('selectstart', NOOP);
-        a[removeEventListener]('dragstart', NOOP);
-        b[removeEventListener]('selectstart', NOOP);
-        b[removeEventListener]('dragstart', NOOP);
-
-        a.style.userSelect = '';
-        a.style.webkitUserSelect = '';
-        a.style.MozUserSelect = '';
-        a.style.pointerEvents = '';
-
-        b.style.userSelect = '';
-        b.style.webkitUserSelect = '';
-        b.style.MozUserSelect = '';
-        b.style.pointerEvents = '';
-
-        self.gutter.style.cursor = '';
-        self.parent.style.cursor = '';
-        document.body.style.cursor = '';
-    }
-
-    // startDragging calls `calculateSizes` to store the inital size in the pair object.
-    // It also adds event listeners for mouse/touch events,
-    // and prevents selection while dragging so avoid the selecting text.
-    function startDragging (e) {
-        // Alias frequently used variables to save space. 200 bytes.
-        var self = this;
-        var a = elements[self.a].element;
-        var b = elements[self.b].element;
-
-        // Call the onDragStart callback.
-        if (!self.dragging) {
-            getOption(options, 'onDragStart', NOOP)();
-        }
-
-        // Don't actually drag the element. We emulate that in the drag function.
-        e.preventDefault();
-
-        // Set the dragging property of the pair object.
-        self.dragging = true;
-
-        // Create two event listeners bound to the same pair object and store
-        // them in the pair object.
-        self.move = drag.bind(self);
-        self.stop = stopDragging.bind(self);
-
-        // All the binding. `window` gets the stop events in case we drag out of the elements.
-        global[addEventListener]('mouseup', self.stop);
-        global[addEventListener]('touchend', self.stop);
-        global[addEventListener]('touchcancel', self.stop);
-        global[addEventListener]('mousemove', self.move);
-        global[addEventListener]('touchmove', self.move);
-
-        // Disable selection. Disable!
-        a[addEventListener]('selectstart', NOOP);
-        a[addEventListener]('dragstart', NOOP);
-        b[addEventListener]('selectstart', NOOP);
-        b[addEventListener]('dragstart', NOOP);
-
-        a.style.userSelect = 'none';
-        a.style.webkitUserSelect = 'none';
-        a.style.MozUserSelect = 'none';
-        a.style.pointerEvents = 'none';
-
-        b.style.userSelect = 'none';
-        b.style.webkitUserSelect = 'none';
-        b.style.MozUserSelect = 'none';
-        b.style.pointerEvents = 'none';
-
-        // Set the cursor at multiple levels
-        self.gutter.style.cursor = cursor;
-        self.parent.style.cursor = cursor;
-        document.body.style.cursor = cursor;
-
-        // Cache the initial sizes of the pair.
-        calculateSizes.call(self);
-    }
-
-    // 5. Create pair and element objects. Each pair has an index reference to
-    // elements `a` and `b` of the pair (first and second elements).
-    // Loop through the elements while pairing them off. Every pair gets a
-    // `pair` object, a gutter, and isFirst/isLast properties.
-    //
-    // Basic logic:
-    //
-    // - Starting with the second element `i > 0`, create `pair` objects with
-    //   `a = i - 1` and `b = i`
-    // - Set gutter sizes based on the _pair_ being first/last. The first and last
-    //   pair have gutterSize / 2, since they only have one half gutter, and not two.
-    // - Create gutter elements and add event listeners.
-    // - Set the size of the elements, minus the gutter sizes.
-    //
-    // -----------------------------------------------------------------------
-    // |     i=0     |         i=1         |        i=2       |      i=3     |
-    // |             |       isFirst       |                  |     isLast   |
-    // |           pair 0                pair 1             pair 2           |
-    // |             |                     |                  |              |
-    // -----------------------------------------------------------------------
-    var pairs = [];
-    elements = ids.map(function (id, i) {
-        // Create the element object.
-        var element = {
-            element: elementOrSelector(id),
-            size: sizes[i],
-            minSize: minSizes[i],
-        };
-
-        var pair;
-
-        if (i > 0) {
-            // Create the pair object with its metadata.
-            pair = {
-                a: i - 1,
-                b: i,
-                dragging: false,
-                isFirst: (i === 1),
-                isLast: (i === ids.length - 1),
-                direction: direction,
-                parent: parent,
-            };
-
-            // For first and last pairs, first and last gutter width is half.
-            pair.aGutterSize = gutterSize;
-            pair.bGutterSize = gutterSize;
-
-            if (pair.isFirst) {
-                pair.aGutterSize = gutterSize / 2;
-            }
-
-            if (pair.isLast) {
-                pair.bGutterSize = gutterSize / 2;
-            }
-
-            // if the parent has a reverse flex-direction, switch the pair elements.
-            if (parentFlexDirection === 'row-reverse' || parentFlexDirection === 'column-reverse') {
-                var temp = pair.a;
-                pair.a = pair.b;
-                pair.b = temp;
-            }
-        }
-
-        // Determine the size of the current element. IE8 is supported by
-        // staticly assigning sizes without draggable gutters. Assigns a string
-        // to `size`.
-        //
-        // IE9 and above
-        if (!isIE8) {
-            // Create gutter elements for each pair.
-            if (i > 0) {
-                var gutterElement = gutter(i, direction);
-                setGutterSize(gutterElement, gutterSize);
-
-                gutterElement[addEventListener]('mousedown', startDragging.bind(pair));
-                gutterElement[addEventListener]('touchstart', startDragging.bind(pair));
-
-                parent.insertBefore(gutterElement, element.element);
-
-                pair.gutter = gutterElement;
-            }
-        }
-
-        // Set the element size to our determined size.
-        // Half-size gutters for first and last elements.
-        if (i === 0 || i === ids.length - 1) {
-            setElementSize(element.element, element.size, gutterSize / 2);
-        } else {
-            setElementSize(element.element, element.size, gutterSize);
-        }
-
-        var computedSize = element.element[getBoundingClientRect]()[dimension];
-
-        if (computedSize < element.minSize) {
-            element.minSize = computedSize;
-        }
-
-        // After the first iteration, and we have a pair object, append it to the
-        // list of pairs.
-        if (i > 0) {
-            pairs.push(pair);
-        }
-
-        return element
-    });
-
-    function setSizes (newSizes) {
-        newSizes.forEach(function (newSize, i) {
-            if (i > 0) {
-                var pair = pairs[i - 1];
-                var a = elements[pair.a];
-                var b = elements[pair.b];
-
-                a.size = newSizes[i - 1];
-                b.size = newSize;
-
-                setElementSize(a.element, a.size, pair.aGutterSize);
-                setElementSize(b.element, b.size, pair.bGutterSize);
-            }
-        });
-    }
-
-    function destroy (preserve) {
-        pairs.forEach(function (pair) {
-            pair.parent.removeChild(pair.gutter);
-
-            if (preserve !== true) {
-                elements[pair.a].element.style[dimension] = '';
-                elements[pair.b].element.style[dimension] = '';
-            }
-        });
-    }
-
-    if (isIE8) {
-        return {
-            setSizes: setSizes,
-            destroy: destroy,
-        }
-    }
-
-    return {
-        setSizes: setSizes,
-        getSizes: function getSizes () {
-            return elements.map(function (element) { return element.size; })
-        },
-        collapse: function collapse (i) {
-            if (i === pairs.length) {
-                var pair = pairs[i - 1];
-
-                calculateSizes.call(pair);
-
-                if (!isIE8) {
-                    adjust.call(pair, pair.size - pair.bGutterSize);
-                }
-            } else {
-                var pair$1 = pairs[i];
-
-                calculateSizes.call(pair$1);
-
-                if (!isIE8) {
-                    adjust.call(pair$1, pair$1.aGutterSize);
-                }
-            }
-        },
-        destroy: destroy,
-        parent: parent,
-        pairs: pairs,
-    }
-};
-
-return Split;
-
-})));
diff --git a/docs/split.min.js b/docs/split.min.js
new file mode 100644
index 00000000..7173f52b
--- /dev/null
+++ b/docs/split.min.js
@@ -0,0 +1,2 @@
+/*! Split.js - v1.5.0 */
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