Pyd2v

Previously released as 1.3.1 when it should be 1.4.0 as it has a breaking change.

⚠️Breaking Changes

- Dropped support for Python 3.6.

Improvements

- Listed the Version in the CLI help information.
- Updated the dependencies to their latest versions.
- Improved Building and Usage Documentation.

⚠️Breaking Changes

- `D2V()` object and `loads` now expect a path argument which may be `None` or a Path to a D2V object.
- `load` now uses the new `_get_d2v()` (explained below) on the input file path (unless it's already a D2V).

Improvements

- New static method `_get_d2v()` has been created, which can be used to generate a D2V for an input video file by path.
- Path to the input D2V file is now stored inside the D2V object for referencing (`D2V.path`). As stated above,
`D2V()` and `loads` will now ask for an optional Path.
- All public-facing class methods now enforce the type of the arguments, as well as checks if the file actually exists
and is not a directory.
- Variables formatted into `D2V()`s repr is now also using their reprs as well. This improves its readability.
- Use consistent double-quotes throughout pyproject.toml.

⚠️Breaking Changes

- Add `load` and `loads` class methods to D2V class giving the ability to parse from a file or string.
- `D2V()` now expects a TextIO based object (e.g. `open(mode="rt")` or `StringIO`). You may wish to use the new
`load` and `loads` commands instead if possible.

Bug Fixes

- Cast flag file data as int, since it's an index to a file parsed into `D2V.videos`.

Improvements

- Create this `HISTORY.md`, add in all previous missed releases with no history.
- Add the ability to select data from the D2V when reading from the cli `d2v` terminal command.
E.g. `d2v vid.d2v settings.Aspect_Ratio`
- Add doc-string to cli `d2v` terminal command.
- Optimize the code that actually parses the D2V, making it more concise and readable.
- Update copyright years in the LICENSE file.

New Features

- Once installed, `d2v` will be an available terminal command. This can be used to read or parse then read a D2V file.

Improvements

- Replace setuptools/setup.py with Poetry for a much better dependency and package management environment.
- Delete now unnecessary bash scripts I used to use starting with v1.0.1 for setuptools usage (setuptools was annoying).
- D2V class moved from `__init__.py` to `d2v.py`. It's generally recommended for the init file to only have needed code
on import only, it's also generally less readable at a glance where the class was. It's still imported and set in
`__ALL__` so that `from pyd2v import D2V` is still possible.
- General improvements and to the README information and structure.

Improvements

- Cast flag position, skip, vob, and cell data to integers.

Bug fixes

- Add a check for the final flag, `ff` terminator. This verifies end-of-stream. It's not an actual flag, so it should
not be parsed as one either (or even kept).