Add utilities.selection.getContainer
Remove anchor tag if url is empty
Find existing HREF when editing hyperlink.
Simplify finding closest 'a' tag
Syntax highlighting in README.md
Merge pull request #44 from penman/patch-1

Thanks!
Merge pull request #43 from slahn/master

Hyperlink enhancements: Editing URL, removing hyperlink (solves #35)
This should also resolve #29

Awesome! Thank you!