Half-orm

Features

* Automatic attempt to reconnect to DB in case of execution failure. (2fd8f6d)
* Allow connection with only the database name. (325f712)
* Add HALFORM_CONF_DIR environment variable (defaults to /etc/half_orm). (45e3431)
* Prevent update and test package when creating the package with hop -c. (153cbf6)
* Allow None as a legit value to unset a field. (eb13677)
* hop renames README.rst to README.md and .haflORM to .hop. (307591c)
* Add usage information into the README file generated by hop. (c956339)
* Improve README in the package generated by hop. (00c3743)

Fixes

* relation.is_set must always retrun a boolean. (942da6c)
* Typos in README. (0caba1c)
* Fix broken unaccent in relation. (9c3d910)

Breaking Changes

* hop now generates a .hop directory in the package instead of .halfORM. (588c2bf)

Features

- Columns of a relation are now regular attributs of the Relation class.
This is a breaking change.
- no more need to install halftest package (pip3) to test half_orm.
- with context on a relation now enters a transaction.

Bug fixes

- allow weird column names: `a = 1` is a regular column name in PostgreSQL.
Of course, you can't use the doted notation to handle such column with
half_orm. Instead, use `rel.__dict__['a = 1']`.
- reverse fkeys

Breaking Changes

- Relation class is not inheriting from OrderedDict anymore.
If `rel` is a Relation object, `rel['col']` must be replaced by `rel.col`.
- A Relation object `rel` is frozen after initialisation (`__init__`),
meaning you can't add attributes to it. This is to prevent errors due
to typos in the expression `rel.col = 'a'` vs. `rel.cal = 'a'`. If
`cal` column doesn't exist in the relation, an exception is raised.
If you need to add an attribute to a class inheriting from Relation,
you can use `_ho_unfreeze` and `_ho_freeze` methods.

Features

- **relation:** Inherit foreign keys. (acb51ba)
- **test:** Add halftest package. (f2d91af)
- **model, relation:** Add reverse foreign keys. (50edf5f)
- **relation:** cast method now returns the casted relation. (bbde48a)
- **relation:** Add order_by select parameter. (57791c7)

Bug fixes

- **fkeys:** Use issubclass instead of hasattr. (2aaf58e)
- **relation, fkey:** Fix relations with multiple foreign keys. (1a69e16)

Bug fixes

- **relation:** Refactoring. Fix fkeys on relation with set operations. Need tests. (bd806f3)
- **relation:** Check if right obj is None in \_\_set__op__. (4cf0b6a)
- **relation:** \_\_neg__ now uses \_\_set__op__ method. (444763c)
- **relation:** Pass the comparison operator with the value in to_dict method. (67e8724)
- **test:** Universe and empty sets are now correctly defined (1 = 1 patch). (2babe1f)

Features

- **halfORM:** Catch error if there is some wierd inheritance in PG that Python MRO can't handle. (aa9543e)
- **field:** Replace \_set_value method by set.
- **relation:** The ugly yet very useful 1 = 1 patch. (fd3d06f)
- **fkey:** Refactoring. Reverse key is now named after the relation it references. (5b98194)

Bug fixes

- **relation:** Disambiguation of column name when using SQL join request.Disambiguation of column name when using SQL join request. (25f9a48)
- **halfORM:** Fix typo in module_template_1. (664159b)
- **relation:** Fix bug with FKEYS_PROPERTIES and inheritance. (675171f)
- **relation:** count must use distinct. (d6ac16b)
- **relation:** Fix joins with set operators. (e4c885c)

Features

- **halfORM:** Reduce to two the spaces reserved to the developper in relation modules (85c3d6c, 0cd6d5f)
- **model:** raise_error parameter is now passed to \_connect/reconnect. (6bba6dd)
- **relation:** Add attribute \_qrn (<schema name>.<relation name>) without double quotes. (fd6c07d)
- **relation:** Add \_set_fkeys_properties. (2b0335f)

Bug fixes

- **halfORM:** Reverse the order in inheritance. (d7d4432)
- **halfORM:** Use aliases for imported inherited classes. Add warning in every modules. (e1f9841)