Update CHANGELOG, TODO and translations
Add completion to search entry

complete fields names and allowed values
Add shortcut for create new collection
Menu items to launch external programs on collection folder

- browse collection folder
- open in terminal
- open with gitg
Create collection: add `error` class to entry widget
Disable clonecollection action until ready
Update tranlsations
Create new collection from open dialog

- move "open" button from headbar to the window
- add "create" and "clone" buttons
- add creation dialog, with input validation
- create a new collection, open it, and open settings dialog
Fix icon install
add script makerelease.sh
Update metainfo
add screenshots
Remove placeholder from List field widget
Add button -action classes in collection settings dialog
Update translations