Add overpy, overpassforge and humanized_opening_hours (#145)

Added overpy, overpassforge and the humanized_opening_hours Python packages.

README.md

@@ -218,6 +218,9 @@ The services in this category allow you to track personal and fitness goals util
 * [osmnx](https://github.com/gboeing/osmnx) - Visualizer for street networks. ([Wiki](https://wiki.openstreetmap.org/wiki/OSMnx))
 * [python-mapnik](https://github.com/mapnik/python-mapnik) - Python wrapper for mapnik.
 * [prettymapp](https://github.com/chrieke/prettymapp) - Create beautiful maps from OpenStreetMap data.
+* [overpy](https://github.com/DinoTools/python-overpy) - A Python wrapper to access the Overpass API.
+* [overpassforge](https://github.com/Krafpy/Overpass-Forge) - A package to build Overpass queries from Python objects.
+* [humanized_opening_hours](https://github.com/rezemika/humanized_opening_hours) - A package to parse the `opening_hours` tag.
 
 ### Java