fix case where colorspecs mishandled serializing to dictionaries when the value had been unset
update roadmap
simplify canvas dom render, and fix toolbar positions issue
same trick for plots to remove extraneous divs created by default by BB
replace safebind with listenTo and remove safebind.coffee
remove unused PNGView
remove old, unused embedding code
clear notebook
Add return statement in welcome view (#915)
Merge pull request #917 from ContinuumIO/mattpap/issue_915

Add return statement in welcome view (#915)
remove inject_snippet, etc
Merge pull request #912 from ContinuumIO/bugfix/toolbar

simplify canvas dom render, and fix toolbar positions issue
need to stop listening correctly
Merge pull request #924 from ContinuumIO/feature/remove_pngview

remove unused PNGView
Merge pull request #922 from ContinuumIO/feature/remove_embed_cruft

remove old unused and deprecated embed code
Merge pull request #903 from ContinuumIO/bugfix/unset_colorspec

fix case where colorspecs mishandled serializing to dictionaries when the value was unset
Merge pull request #923 from ContinuumIO/feature/remove_safebind

replace safebind with listenTo and remove safebind.coffee
Merge branch 'master' into feature/tests