New Actions/Filters/Functions and Routes

• Added comprehensive support for actions and filters (thanks @mgmartel)
• Rewrote routing to template to be 100% harmonious with WordPress (thanks again @mgmartel)
• Fix to some pagination errors when using a custom rewrite on a taxonomy (thanks to @kylehotchkiss)
• Fixed issue with stripping the ellipses on a preview (thanks to @Bryanscode)
• Functions now work more logically, example: {{function('my_special_function', 'arg1')}}