Bump version: 2.5.3 → 2.5.4

Bump version: 2.5.2 → 2.5.3

Bump version: 2.5.1 → 2.5.2

Bump version: 2.5.0 → 2.5.1

chore: release v2.5.0

chore: release v2.4.2

chore: release v.2.4.0

- Removed Reference.uri; instead use uri_for(reference) or reference._uri to access Reference URIs

chore: release v2.1.3

fix: schema_resolve_refs() sometimes not using the correct root

Merge branch 'master' of https://github.com/biosustain/potion-client

# Conflicts:
#	.travis.yml
#	README.rst
#	potion_client/__init__.py
#	potion_client/collection.py
#	potion_client/converter.py
#	setup.py
#	tests/test_init_client.py