Add parens, update tests.
Update Requirements.
Move to support/
Add 24bit colour test.
Add 24bit colour support (turned off for now)
Reduce duplication between API and models;

- Move API build stuff into models.
- Combine API::View with API::Interface.
- Rename API::Interface#create to #define.
- Move API::Store to Vedeu::Store.
Add height and width convenience methods to API.
Tidy up.
Re-implement refresh groups;

This allows the client to refresh a group of interfaces in one call.
Extract position into class.
Remove commented code.
Tidy up Vedeu.events, add #clear_screen to Terminal.
Merge pull request #64 from gavinlaking/twerks

Refactoring various.