New Year, New Features!

2018 brings several new features & bugfixes to tiny-lr, including some that we've been waiting on for over 2 years now!

#93 - Add reloadMissingCSS Option (@STRML) [Thanks @smhg for handling the upstream merge!]
#125 - Allow Undefined Errors (@ShadSterling)
#127 - Allow Server Path Prefix (@chrmod)
#128 - Fix Typo Preventing Done Callback From Firing (@tmthrgd)