Half-orm

* Bump gitpython from 3.1.32 to 3.1.34 (9735d3f)
* [hop] Remove gen-api command. (4fd4061)
* Bump gitpython from 3.1.31 to 3.1.32 (1289178)
* Bump cryptography from 41.0.2 to 41.0.3 (262d560)
* Bump certifi from 2023.5.7 to 2023.7.22 (ea2eceb)
* Bump cryptography from 41.0.0 to 41.0.2 (af58b62)
* [hop] Add base_dir to PYTHONPATH. (4a49763)
* [hop] Use subprocess.run to run the tests with pytest. Module doesn't behave as command. (cf910ad)

* [hop] Fix: wrong order in CHANGELOG. (HEAD -> main) (c763300)
* Change the representation of a Relation object. (c2a18cb)
* [hop][WIP] Add gen-api command. (d2b180e)
* Add Makefile for test and build. (04ba7c2)
* [test] pipenv install pytest-cov. (5f3647e)
* Move utils.py to half_orm directory. (0b63fbd)
* Update README. (ec7c62c)
* [hop] The __init__ module of the package exports only the MODEL of the database. (69b4d74)
* [hop] Remove db_connector.py (5a00896)
* [model] Add the method classes. (badda81)
* [pipenv] Add twine. (782f0b1)

* [test] Upgrade halftest schemas half_orm_meta and half_orm_meta.view. (ed1769a)
* [hop] Refactor view "half_orm_meta.view".hop_penultimate_release. (ba401a3)
* [hop] Fix. Restore the correct DB release in case of error. (9b9acde)
* [hop] Print error message and exit if the database is missing. (72ac017)
* [hop] Add half-orm version to hop state. (2a1b504)
* [ci][github] Tests with postgresql 9.6 to 15 (Python 3.11). (44c180f)

* [breaking][relation] Prefix methods with 'ho_*' instead of the ugly '_ho_*'. (0d11bc0)
* [relation] Raises a DeprecationWarning error if FKEYS is defined in a module. (b9a8622)
* [packager] Check if the connection file exists before proceeding. (17884cc)

BREAKING CHANGE

`_ho_*` methods in half_orm.relation.Relation are replaced by `ho_*`

* [doc] Add margin to hop_workflow png. (903c707)
* [doc] pg_meta. (3ff7c7b)
* [test] Add tests for deprecated and function and procedure. (2824622)
* [model] Remove Model._check_deja_vu_class method. (c3a1d0f)
* Add relation_factory module. (dd83534)
* [WIP] (d314414)
* [test] Delete all entries from halftest.actor.person before starting the tests. (284a79a)
* [relation] Change SQL query formatting. (7ddc6f8)
* [WIP][refactor] Add trace decorator on DML methods. (b11d196)
* pylint... (ce6a55a)
* [WIP][refactor] SQL query formatting. (808909c)
* [WIP][refactor] Add method Relation.__fkey_where. (a0b74a0)
* [WIP][refactor] Rename method Relation.__what_to_insert to Relation.__what (f05887b)
* Rename Fkey._prep_select to Fkey._fkey_prep_select. (c153df9)
* [doc] Add png image. (4d37313)
* [doc] background white for hop_workflow.svg. (14d576b)
* Fix hop mini-doc URL. Add a white background to the workflow image. (d970491)
* [WIP][doc] Add a mini-documenation for the hop command. (07091db)
* Revert "[relation] Rewrite _ho_is_empty." (786aec2)
* [relation] Rewrite _ho_is_empty. (8bc38f4)
* [test] Fkey. (22ea8a5)
* Remove unused and dead code. (cbf71ce)
* [test] Test class HoTestCase. (90b3831)
* [test] relation ioperators. (ea7bfa9)
* [test] Relation._ho_cast. (92a575c)
* [test] relation._ho_join. (30f8121)
* [relation] Add context manager for Relation objects. (4bd5c6e)
* [test] _ho_limit, _ho_offset, _ho_dict & _ho_only. (9b28577)
* [test] Set operators on foreign keys. (95b21ab)
* [test] _ho_join errors. (c5d11b2)
* [relation] _ho_dict does not return not set values. Remove __join private method. (89aea1f)
* [test] Relation repr. (6570e32)
* [relation] Mark _ho_group_by and _ho_json as not tested. (09aded8)
* [test] Check automatic reconnection after postgresql is restarted (uses sudo). (28cf326)

* [field] Fix Bad adapter for NULL. (2f07867)