Have git treat svg files as binary
Fix index.html indentation
Make font paths relative

Fixes paths when library is included in another project as a component.
Build new version
Fix development environment by adding browserify to watch task
Rm logger comments
Simplify button markup/logic, re-introduce eq builder buttons
Rm extra linebreaks
Make naked fraction and root buttons a little nicer
Build anew
Rm orphan math_button function
Rm negative_slash_positive, standardize on negative button
Add a wrapper to each button label so that we can hide and show an icon instead
Switch calculator icons to private unicode range
Make interpolated class selectors for buttons, make square a wrapper for exponent
Remove square button builder
Remove unused fn button (trig)
Build anew
Fix single quote-> coffee style double qute for interpolation
Remove font symbols that exist in unicode, improve caret

If the font symbols are available as unicode, no need to maintain a custom
replacement.