Recurfaces

- Added `Recurface.lineage` and `Recurface.absolute_render_position`
- Added rounding to render position before passing it to pygame, to avoid pygame flooring the float value instead
- Minor error message improvements
- Reordered properties

No breaking changes.

- Added `.copy_surface()`, which will allow subclasses to override this method if they wish to use a more specialised/optimised process for copying their stored surfaces
- Added `.update_surface()`, to allow a Recurface object to be manually flagged for update in the next render
(the expected external use case for this is to indicate to the Recurface object that the surface has been changed,
whenever this change is state mutation rather than assigning a new value - simply assigning a different value to `.surface`
will flag this automatically, but mutations will not)
- Reordered constructor kwargs
- Minor code style changes
- Further minor optimisation in `.render_priority`
- Various improvements to comments and docstrings

No breaking changes.

- Fixed bug causing `Recurface.trimmed_rects()` to trim slightly *too* many rects, resulting in visual artifacting in areas where the screen is not updated appropriately
- Added and updated tests
- Further optimisation to `Recurface.trimmed_rects()`
- `.add_update_rects()` now receives unpacked *args rather than a single `Iterable` arg
- Renamed params to make style consistent
- Updated docstrings and comments

This release features breaking changes in the form of modified method signatures as indicated above.

- Returned rects when calling `.render()` are now trimmed down to remove any unnecessary rects and None values, for optimisation purposes

No breaking changes.

- Fixed memory leak caused by repeatedly re-raising the same stored TypeError object, causing it to continually grow in size

No breaking changes.

- Optimised `.child_recurfaces` to only generate a new output value when a relevant change is made requiring a recalculation rather than each time it is requested, similarly to `.ordered_child_recurfaces`

No breaking changes.