Dismiss the call tip correctly when moving cursor out of expression for new
text views.
Fix a problem with overlays on zero-length lines.
Create a RewriteBuilder that simplifies the creation of Rewrites.
Add an add_indent utility function.
Prevent a hidden message bar's text box from interfering with editor focus.
Don't block main thread while performing automated renames.
Update the about text to reflect new project name (better late than never).
Add editor_closed signal to AbstractApplication.
Add ability to override the lexcat of a span without upsetting the syntax
highlighter.
Minor appearance improvements for find bar.