Change existing for-tag-unpack to unpack lists instead of maps (as django does) and add more tests for unpacking maps.
Change existing for-tag-unpack to unpack lists instead of maps (as
django does) and add more tests for unpacking maps.

cutelyst/grantlee,cutelyst/grantlee,simonwagner/grantlee,simonwagner/grantlee,simonwagner/grantlee,cutelyst/grantlee,cutelyst/grantlee,simonwagner/grantlee,cutelyst/grantlee,simonwagner/grantlee,simonwagner/grantlee