Added gulp for a build process and speed up pushing out a release. Automate ALL THE THINGS. Also some code cleanup and bug fixes.

Fix for 3200 (not available) condition code and related image [#77].

Fixed my assumption of query being present [#72].
Version 2.7.0
Added v2.7 changelog info.
Changelog cleanup.
v2.7.0 is up on cdnjs.
Automatically rewritten for npm.