Half-orm

* [hop] Check that we are on hop_main branch before upgrade in prod. (7702aed)
* [model] Remove psycopg2.pool. (c7d99e3)
* [test] More coverage. (9d66be0)
* [test] Coverage (without half_orm/packager) still pre-alpha. (78edfd1)

* [CI][github] Test on push/pull request on default branch. (49e5db2)
* [relation] Relation methods are now prefixed with '_ho_'. (5e981f8)
* [test] Reenable fkeys test_runtime_error. (81a9446)
* [CI] Only set git user.email and user.name if in Github CI environment. (bc8aaee)
* [hop] Don't override global git user infos in dummy_test.py. (b8fc5cc)

* [Field] Register psycopg2 json adapter. (053d39e)
* [test] deprecated methods in relation. (7f96874)
* [gitlab][CI] Fix dependency. (3c6ad02)
* Add shields to README. (9446b35)
* [github][ci] OK. (b637929)
* [model] Fix annotation. (598570a)

* [model] Fix typo in deprecated message. (6b76f6e)

* [hop] Add release SQL files. (2a2b2d1)
* [relation] BREAKING CHANGE. Returning values must be specified except for ho_insert. (acf363e)
* [pipenv] Add pylint. (github/master) (035a589)
* [model] Config file load error management. (be281e9)
* [model] Fix deprecation warning on Python interpretor call. (30adfcc)

* Bump cryptography from 39.0.0 to 39.0.1 (5d5c200)
* [model] Add connection pool. (71f96fd)
* [model] Refactor. (274318c)
* [hop] Test script. (b85422c)
* [hop][WIP] Rename command test-release to apply-release. (71fdada)
* [hop][WIP] Use pytest as a module. (github/master) (69b0c55)
* [CI] Add superuser to root role (postgresql). (1f73a97)