Lakefs

0bf71b72 don't sign EXPECT header (1477)

484738c8 Add Azure adapter (1444)
f2ed0869 Add "get metarange", "get range" API endpoints (1465)
611d9c02 basic client config to pass default max conns per host. (1455)

a9811832 Different dbpool for branch-locker (1447)

c3f89e48 Import should use repo default branch (1422)
a284fc31 Pass s3 retry param to the aws config (1424)
c16d1f78 Switch left and right branch ref in UI diff pagination (1426)
80e423a0 generate CLI docs automatically from command help text (1408)

e307d37e Control number of concurrent range writer uploaders (1351)
eb4097c0 Remove SSTable reader cache, use shared pebble in-memory cache (1332)
33573d7b allow revert merge commit (1353)

This is the first release of [lakeFS on the Rocks](https://docs.google.com/document/d/1jzD7-jun-tdU5BGapmnMBe9ovSzBvTNjXCcVztV07A4/edit?usp=sharing)! :tada:
Included is a big change to lakeFS' data model, which is now much closer to Git's.


Main benefits

1. Metadata representing committed versions now lives on the object store itself (instead of on PostgreSQL)
2. As a result, PostgreSQL will now typically be smaller and do much less than in previous versions
3. Performance should be more predictable, and noticeably better across the board, especially on large diffs/commits/merges

Upgrading from previous versions

https://docs.lakefs.io/deploying/upgrade.html