to do demo bug

[artfulrobot]

Hi, just came across your project, looks interesting!

Test case: https://codepen.io/cferdinandi/pen/wvmoPMg

Your to do app seems buggy because there's no escaping of the data. Eg if I enter " oops as a to do item name and hit Enter, it's added but clicking Edit generates invalid html ,and the input field is blank.