filter warnings, perhaps better done with argv or ENV, and bump coverage
introducing some constants
Merge pull request #4 from apelade/pullreq_tansaku_command_line

command_line branch from ping-pong
readded check for zero score, tests passing
Merge pull request #5 from apelade/timeout_spec_warnclog

run_with_timeout fix, depends on command_line
Merge remote-tracking branch 'tansaku/command_line' into HEAD