* Fix error message in updateNoteFields method
* Fix error handling in cardsInfo, notesInfo methods
* Add more tests for updateNoteFields, notesInfo
* Fix error handling in several methods
Also fixed obvious bugs in replaceTags and replaceTagsInAllNotes
methods.
* Add more tests for cards methods
* Add more tests for notes methods
* Update documentation on cards methods
* added findAndReplaceInModels api call
* added documentation for findAndReplaceInModels
* added findAndReplaceInModels api call
* updatd findAndReplaceInModels function
* added unit test for findAndReplaceInModels in models
* updated findAndReplaceInModels
* added unit test for findAndReplaceInModels
* removed 'all_models' in findAndReplaceInModels
* clearUnusedTags and replaceTags are added
* added clearUnusedTags and replaceTags
* added clearUnusedTags and replaceTags
* removed whitespaces and indentations
* removed white spaces and indentations
* added removeEmptyNotes
* clearUnusedTags and replaceTags are added
* added clearUnusedTags and replaceTags
* added clearUnusedTags and replaceTags
* removed whitespaces and indentations
* removed white spaces and indentations
- Sound and video share same [sound:..] tag. See 0c08ff5317/pylib/anki/sound.py (L33)
- Tested and verified picture is added and video is added when `addNote` API.