* Close #124

* Add `TiledError::InvalidEncodingFormat`

* Rename `DecompressingError` to `IoError`

* Add `InvalidPropertyValue` & `UnknownPropertyType`

* Remove `Other`

* Remove `ParseTileError`

* Misc comment improvements

* Revert  `IoError` back to `DecompressingError`
- Use `CouldNotOpenFile` for `Map`

* Address PR comments