Add hunter archive with HUNTER_CONFIG feature
Add LOCAL, GLOBAL, FILEPATH sub-options

HunterGate signature:

HunterGate(
    URL url
    SHA1 sha1
    [GLOBAL | LOCAL local | FILEPATH filepath]
)

See: https://github.com/ruslo/hunter/issues/17
Add HUNTER_SHA1_SHORT
Add v0.7.0 hunter archive