upgrade chess module
use game moves as a list of strings
PgnRepo WIP
he translation
test and fix binary PGN repository
binary PGN database migration
Merge branch 'binaryPgn'

* binaryPgn:
  binary PGN database migration
  test and fix binary PGN repository
  PgnRepo WIP
  use game moves as a list of strings
  upgrade chess module

Conflicts:
	todo