add testing framework
Switch some const String& parameters to StringView
Merge remote-tracking branch 'alexherbo2/testing-framework'
Start regex search from selection min/max depending on search direction
Commit undo group after removign initial selection markers in testing script
Fix various tests
concat-{yank,delete} was removed, replace with concat-paste test
Support changing buffer when an edition is in progress
Display debug buffer on failed test cases
Fix goto last buffer test
Merge branch 'master' of github.com:mawww/kakoune