Move Mercurial requirement into a comment as it does not support Python 3 yet, so it has to be installed separately from funfuzz.
Move Mercurial requirement into a comment as it does not support Python 3 yet, so it has to be installed separately from funfuzz.

nth10sd/funfuzz,nth10sd/funfuzz,MozillaSecurity/funfuzz,MozillaSecurity/funfuzz,nth10sd/funfuzz,MozillaSecurity/funfuzz