[#2092]
1. Make $ function in embed.js use querySelector.
2. Update uses of $ in embed.js with # symbol.
Bug 2074 - Refactor make.js
Bug 2074 - Optimize use of the r.js optimizer
[#2060] zoom refactoring.
Bug 2079 - Fix share URL in post roll
[#2058] Added transitions properly for all of our plugins.
[t2083] Fixed media queries and added border on video.
[#2100] linting fixes.
[#2072] Remove use of deprecated path.existsSync() function in favour of fs.existsSync() in Cornfield

Closes gh-862.
[#2045] Added scroll listener for superscrollbar, and refactored to remove feedback cycle from scroll listener.
[#2063] Disable snapshotting in default config file.
[#2097] Fix Popcorn Wrapper tests for new Wrappers in Popcorn
Bug 2055 - Switch to signed cookies to store session data
[#1824] Added IE9 to supported browsers list

[#1824] Use a non-capturing group in User Agent regex
[#1858] Update mailing list link in readme
[t2051] Breadcrumbs functionality in editors
[#1959] Preventative measures against hitting the rate limiting of Twitter API
Bug 2111 - CSS-ify embed-shell.less
[#2111] Made sure exporting youtube, vimeo and soundcloud media works
[t2114] removed __newStyleSheet from plugin module