Zetok Zalbavar authored
Regexp didn't actually restrict it, found by @iphydf. Verification now treats commit & merge messages differently, since as pointed out by @initramfs treating them the same could result in marking as valid a non-merge commit that starts with `Merge`. `s/Pls/Please/` as requested by @initramfs. Also require a space between `Merge` word and rest of the commit message.