What's Changed
* docs: more in-depth description of the ingest function by michalc in https://github.com/uktrade/pg-bulk-ingest/pull/50
* docs: clarify high_watermark argument by michalc in https://github.com/uktrade/pg-bulk-ingest/pull/51
* docs: fix example by michalc in https://github.com/uktrade/pg-bulk-ingest/pull/52
* docs: fix typo and improve clarity around locking by michalc in https://github.com/uktrade/pg-bulk-ingest/pull/53
* refactor: less code in batch loop by michalc in https://github.com/uktrade/pg-bulk-ingest/pull/54
* fix: high-watermarking when no primary key by michalc in https://github.com/uktrade/pg-bulk-ingest/pull/55
**Full Changelog**: https://github.com/uktrade/pg-bulk-ingest/compare/v0.0.8...v0.0.9