Pure-utils

**Changelog**:

* Add new module - ``repeaters`` (utilities for repeat functions).
* Update development dependencies.

**Changelog**:

* Add ``unpack`` utility in ``containers`` module.
* Add function synopsis in README short descriptions.
* Fix examples in docstrings.
* Fix tests for ``debug.caller``.
* Fix ``containers`` function signatures.
* Fix README links for ``containers`` utilities.
* Change development status to Beta.
* Rename ``datetime`` module to ``times``.

**Changelog**:

* Update versions build and dev dependencies.
* Add new module - `containers` (utilities for working with data containers).

**Changelog**:

* Refactor imports into tests.
* Rename `dt` module to `datetime`.
* Add `_internal` subpackage (with "private" modules).
* Refactor variables into `debug`, `profiler` and `_internal/*` modules.

**Changelog**:

* Add several tests (for `dt` module) for python3.10 only.
* Add new module - `debug` (utilities for debugging and development).
* Add new module - `profiler` (helper classes for working with the cProfile).
* Refactor .docs/Makefile
* Add support Python3.12 into ci scenario.
* Use flake8 explicitly into Makefile and ci scenario.
* Remove `pyproject-flake8` optional dependencies, because it's orphaned on github.

**Changelog**:

* Add new module - `dt` (utilities for working with datetime objects).