Half-orm

* [hop] now generates the ho_dataclasses module containing a dataclass for each relation/view in the model. (57b0e84)

* [relation] Check that the value is valid for ho_limit an ho_offset methods. (cdc6e9b)

* [hop] Remove last reference to half-orm-packager in Pipfile template. (11b79a0)

* [hop] Remove references to obsolete half_orm_packager. (5b2a234)

* [hop] Fix. hop new was broken with devel option on an existing database. (02466c8)

* Remove dependency to pydash. (69e7fa2)
* [test] Adjust to one liners comments. (7f096fe)
* Cleanup. (a9365ac)
* Cleanup. (5922928)
* [relation][BREAKING CHANGE] Remove methods ho_group_by and ho_json. (a346236)
* Cleanup. (e8645e6)
* [test] Add test for relation defined by fkey. (997bca3)
* Cleanup. (044f640)
* [test] Remove duplicates in algebra test. (98c99e5)
* Cleanup. (41ea4e9)
* [hop] Do not check rebase twice. (56dfd11)
* Fix broken hop_test. (31df016)
* [WIP][model] Cleanup. (6ed901b)
* [WIP] Cleanup. (dc16ba1)
* Revert "[cleanup][hotest] Readability."" (848e7bd)
* Revert "[field] Clean-up." (60b2394)
* [cleanup][hotest] Readability." (a92bbda)
* [field] Clean-up. (7d141e2)
* [field] Mark _set method as deprecated. (ebaea77)
* [field][cleanup] Merge if statements. (a966ff9)
* [field][BREAKING CHANGE] Use of the set method is now mandatory to set the value of a field. (47c6c17)
* [Cleanup] Remove commented out code. (temp) (3f965d8)
* Bump idna from 3.6 to 3.7 (8a0f2b2)

BREAKING CHANGES

Relation.ho_group_by and Relation.ho_json have been removed.

With version 0.10, it's no longer possible to set a field value directly.
You must use the `set` method to do so. Stay with version 0.9 until you have adapted your code.

Before:

py
Relation.field = value


After

py
Relation.field.set(value)