Add support for deleting status columns. If a column is not empty then
it will not be deleted and the user will see an error message in the
status bar.
Part of apollo/pelican#24
This commit adds support for creating new status columns. When the user
is in the 'board edit' mode, they can press the 'c' key to create a new
column. When a new column is created it automatically assumes the last
position on the board. We will add support later on to allow the user to
re-arrange the columns on the board.
Part of apollo/pelican#22
Add a TextView primitive next to the status bar that displays the
board's current mode. In this commit the baseFlex is replaced with a
Grid primitive to prevent the need to add more Flex primitives.
Part of apollo/pelican#23
Changes:
- Rename the UI type to App.
- Rename NewUI() to NewApp().
- Move init functions to internal/ui/ui.go.
- Call app's initialisation function from main.
- Move the keymapping functionalities to internal/ui/keymappings.go.
- Add documentation for updateColumn() and updateAllColumns().
- Applied gofmt.
Also:
- Build(mage): optionally include -a and/or -v during go build.
