add act QuasiQuoter.
add Bool instance for Path, Query.
generalize Strategy class.
some changes

change module structure.
add header filters.
add LimitSome strategy.
apiary-cookie: follow to change module name.
some changes

generalize Strategy class.
add getHeaders function.
add documentation.
major version up.

delete deprecated functions.
add eqHeader filter.
update cabal files.
Merge branch 'develop'

change module structure.
generalize Strategy class.
add LimitSome Strategy.
getHeaders action.
header filters.
javascript like Bool Path, Query.
act QuasiQuoter.