Now collects all (non-ignored) files via `git ls-files` and only skips
some binary formats.
Also adds some type annotations and fixes some newly unconvered
UK-spellings.
Custom location installed castnow can't be killed with the command
`pkill -f /usr/bin/castnow`. Now recover the path to the binary in the path for
calling and killing the program.
Florian Bruhin
François Chavant
Simon Désaulniers