MININIM 201701051749

Implement support for replays. See F7 and ALT+F7 key bindings as well as --record-replay, --replay-info, --validate-replay-chain, --rendering, --time-frequency options and non-option [REPLAY...] arguments. Complete and valid replay chain for standard legacy level set included in data/replays. Now the title screen has a demo replay of level 0.