Txt2dub

Fixed

- Invalid PyPi dependency (pyttsx3 fork on GitHub)

Changed

- Replaced pyttsx3 with pyttsx3-alt (a PyPi published fork with the bugfixes for 1)

Fixed

- Generate function now works on Mac (1)
- Crashes in macOS from pyobjc were resolved by downgrading for now

Changed

- Bumped textual dependency to 0.26.0
- Pinned pyobjc dependency to downgraded 9.0.1 (Darwin only)

Added

- Screenshots and descriptions of `tx2dub` in README.md

Fixed

- Bottom-docked toolbars not calculating `height: auto` correctly after upgrade to textual0.25.0, so set a fixed `height: 5`

Changed

- Bumped textual dependency to 0.25.0

Added

- Initial release of txt2dub.