x11/rterm: update to 0.0.7

- Initial support for grapheme cluster.
- Fixing some issues caused by grapheme clusters (still some to fix).
- Move the pty from term to app.
- Added some initial tests to term.
- fix the same panic as in 82efa38
- fix selection regression: do not start selection on button press
- Initial code for wide glyph support.
- refactoring
- fixed start-up resize and trivial readme
- Fixed a bug when resizing while using less etc.
- enable blinking
- simplified alt screen handling

(pin)