Ignore .DS_Store.
Remove Yard documentation. (Not needed yet...)
Remove unnecessary namespacing.
Functionality moved to other classes.
Remove unused classes 'Cell' and 'Mask'.
Remove #set instance method and class initialiser.
Work in progress.
Miscellany.

- Reorder clauses.
- Rename #m to #suffix.
- Remove class << self visual noise.
Whitespace.
Remove reliance on Curses.
Declare git commit bankruptcy;

- Too many changes to track.
- Should have committed more regularly.
- I've punished myself appropriately.
Get tests passing as fast as possible.
Add placeholders for missing test files.
Improve Colour::Translator with validations.
Remove unused classes;

- Colour::Custom
- Colour::Palette
- Colour::Style
Remove #eol method.
Remove unused DBuffer class.
Remove Rubocop and Cucumber.
Reorder tests to reflect class.
Add placeholder tests.