Immanuel

- Localization added with Brazilian Portuguese as its debut translation, courtesy of nodbr.
- Chart weightings are now wrapped in their own class, so instead of, for example, `natal.weightings['elements']` you can now access it via `natal.weightings.elements`.
- Stringified chart objects now show movement (direct, retrograde etc.)
- Object & house JSON show decan info.
- Sign JSON includes modality & element.
- Fixed an issue with the swisseph file path not always being set, with unpredictable results in some use cases.

- Fixed broken `add_filepath()` test
- Added `date_time_ambiguous` flag to `Subject` class

- Composite chart fixes for equal, Vehlow and whole-sign house systems.
- Declinations added to houses.
- Documentation updated for `add_filepath()` update.

- Removed `set_filepath()`
- Moved `add_filepath()` into `BaseSettings` class
- Removed `__init__.py`
- Updated docs to reflect changes

Simplified `Chart.house_for()`.

- Improved `settings` class and introduced cascading settings.
- Added `Chart.house_for()` method to determine current chart's containing house for passed outside object.
- House objects now have `number` attribute.
- Added tests and documentation to reflect above changes.