Rummikubconsole

Fixed

- Do not crash when clearing an empty rack or table.

Fixed

- Fixed Python 3.8 compatibility issues

Changed

- Instead of repeating the last command, hitting enter at the prompt without a command now defaults to the `solve` command instead.

Fixed

- Minor changes to the contents of the package distribution (removing some surplus dev-only files).
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Added

- Compact tile group and run notation in commands; a colour followed by two numbers separated by a dash (`k3-6`) expands to a run of tiles (here, `k3`, `k4`, `k5` and `k6`), and multiple colour letters followed by a number (e.g. `bro8`) expands into a group (`b8`, `r8` and `o8`).
- Added a 'version' command and improved the help system.

Fixed

- readline column handling at the command prompt no longer is thrown off by ANSI colour codes.
- Include sets with jokers in runs longer than the minimum length, where the joker is not first or last.
- In rulesets where the number of jokers matched the number of number repeats per colour, the solver would not restrict the number of jokers used. This was not really an issue as the contents of the rack already placed a stricter constraint.

Fixed

- Corrected command name in the documentation

Fixed

- Fixed a packaging issue that meant the core package was never installed into site-packages