Merge branch 'release'
pre-commit: Import author maintenance feature from https://github.com/xkr47/Eclipse-Fonts
Implement #58 - support *.robot extension in addition to *.txt
Add support for new keyword-taking keywords "Run Keyword And Return", "Run Keyword And Return If" and "Run Keyword And Return Status".
More *.robot support related to #58
Merge branch 'master' into release
Bump version to 1.4.0