Pter

Fixed
- Bad implementation of `Application.refresh` could cause black screens with newer versions of cursedspace

Changed
- Refer mostly to vonshednob.cc instead of github.com

Fixed
- Close the completion when the cursor leaves the word that the completion was started for
- Check latest version by querying vonshednob.cc/pter/latest

Added
- Support for `not:pri:`, which was kind-of implied in the documentation, but not really implemented yet
- Support for relative dates in searches for `due:` (and before/after), `created:` (and before/after), and `completed:` (and before/after), which was already promised in the documentation but didn't fully work (and when it did, it was horribly inefficient)

Fixed
- Implementation for `lessimportant:` and `moreimportant:` was broken ([13](https://github.com/vonshednob/pter/issues/13))

Added
- Support for recurring tasks ([12](https://github.com/vonshednob/pter/issues/12))

Fixed
- Potential crash when the todo.txt changed in the background at a bad time
- Various previously overlooked remnants from the refactoring

Added
- `delete-task` function controlled by `delete-is` configuration option, disabled by default to prevent accidental deletions ([9](https://github.com/vonshednob/pter/issues/9))

Fixed
- The configuration file’s keys are now case-sensitive (as documented before, but not implemented accordingly). This might break your existing configuration file, especially with respect to keybindings.

Fixed
- The search bar would not show '(no search active)' when starting pter

Changed
- Depend on version 1.3.0 of cursedspace