Added support for selection borders, in the form of lines above and below the selection. This extends the underline functionality somewhat, and only triggers on multi line selection. Can be toggle with shift-alt-cmd-h. If underline is disbled, this will not show up
Added hotkey to toggle hiding the highlight on select
updated readme
Added screenshot for multi line selection borders
Fixes
Fix line height growing.
Add support for React Editor

[Closes #15]
Prepare 0.7.0 release
Merge branch 'line-selected'