Merge pull request #92 from metabrainz/pep508

Use PEP508-style requirements, supported by both pip and install_requires

Author: alastair

requirements.txt

@@ -9,7 +9,7 @@ redis>=3.5,<4.0
 msgpack==0.5.6
 requests>=2.23.0
 SQLAlchemy>=1.3.16
-git+https://github.com/amCap1712/mbdata.git@upstream-schema-changes#egg=mbdata
+mbdata@git+https://github.com/amCap1712/mbdata.git@upstream-schema-changes
 sqlalchemy-dst>=1.0.1
 importlib-metadata>=3.10.0
 itsdangerous==2.0.1