Feature/hash map values

**Changes**
 - Restructured gem directory layout.
 - Changed `TfgSupport` to `TFG::Support`.
 - Re-implimented `Hash#deep` recursively.
 - Added `Hash#map_values` and `Object#as`.
 - Removed `Sequence` as it had no specs.
 - Bumped version number to `1.0.0`.