Release v0.7.2

What's Changed

• Fix #181 - use request handler for db ops by @erichare in #185
• Fix #179 : alias for upsert calls by @erichare in #180
• Add methods to_sync and to_async by @cbornet in #183
• Fix #186 - token and api endpoint not optional by @erichare in #187
• Add tests for collection "indexing" settings by @hemidactylus in #178

Full Changelog: v0.7.1...v0.7.2