Added is_loading and is_removing properties to TV show object

Split API endpoints into v1 and v2
Refactored allowed web methods to include PUT, DELETE, and OPTIONS
Refactored allowed web headers to include content-type and authorization
Added new series API v2 endpoints
Refactored TVShow airs_next, airs_prev, episodes_unaired, episodes_snatched, episodes_downloaded, and episodes_special methods
Added new TVShow method epsiodes_total to speed-up main show page load times
Added marshmallow to de-serialize SQLAlchemy data for sending back to UI frontend
Added config API v2 endpoint
Converted statusStrings from UserDict to built-in dict without composite splitting
Added IMDbInfo Schema to output json to frontend
Added API v2 Authorization header handling to connect frontend to backend securely
Added API v2 patch method for updating series data
Added API v2 JSON error handler
Refactored how web async calls are done
Added allowed and preferred qualities props to show object
Added poster and banner props to show object
Added to_json method to both show and episode objects
Refactored show object get_overview function into episode object overview property
Added episode manual search API v2 endpoint
Added series episodes rename API v2 endpoint
Refactored languages API endpoint for TheTVDB API client
Refactored indexerAPI indexers function to return list of indexers
Added file browser API v2 endpoint
Updated requirements.txt to work with Python 3.9.x
SR Auth certs are now grabbed and stored to avoid rate-limit issues
Added series API v2 endpoint to add new shows
Added retrieve series metadata API v2 endpoint
Fixed parsing seeders/leechers for IPTorrents
Updated URL for gktorrents

Fixed issue #SICKRAGE-APP-5TZ - NoResultFound exception not handled in get_indexer_absolute_numbering function, not returns -1 when exception is thrown
Fixed issue #SICKRAGE-APP-5YH - FakeUserAgentError exception not handled when attempting to get a random user agent string for core web sessions, now returns default SR user agent string if exception is thrown
Fixed issue #SICKRAGE-APP-5XV - NoneType possibly returned when getting season/episode numbering from episode object due to improper comparison
Fixed issue #SICKRAGE-APP-5XE - AttributeError occurrence when trying to split show scene exceptions data by delimiter if previously never set
Fixed issue #SICKRAGE-APP-5ZS - TypeError thrown due to episode status being set as a string instead of a integer

Fixed #SICKRAGE-APP-5SY - IntegrityError sqlalchemy.engine.default in do_execute
Fixed #SICKRAGE-APP-5SH - AttributeError sickrage.notifiers.plex in update_library
Fixed #SICKRAGE-APP-5T6 - KeyError sickrage.core.tv.show in delete_show
Misc fixes for app API
Refactored Plex notifier client
Added default web session timeout of 15s
Lowered core external API timeout to 15s
Wording correcting in notifications.mako

Added code to check_requirements core function to compare install requirement versions to requirements.txt, if installed version older then update or if not installed then install
Added code to cleanup dupe scene season/episode/absolute numbering from main database
Added code to prevent dupe scene numbering being set on episodes
Fixed #SICKRAGE-APP-5HH - KeyError in sickrage.providers.torrent.torrentz in search method
Fixed #SICKRAGE-APP-5JC - IndexError in sickrage.providers.torrent.hdspace in parse method
Fixed #SICKRAGE-APP-5HW - AttributeError in sickrage.core.tv.show in want_episode method
Fixed MultipleResultsFound when using scene_numbering get_indexer_numbering method to map scene season/episode to indexer season/episode numbering
Fixed #SICKRAGE-APP-5K7 - RuntimeError in sickrage.core.websocket in push method
Fixed #SICKRAGE-APP-5MH - AttributeError in sickrage.providers in <listcomp>
Fixed #SICKRAGE-APP-5J2 - AttributeError in sickrage.clients.torrent.transmission in _get_auth method
Removed unrequired scene_numbering table from main database
Fixed issue with nulled booleans being stored in main database TV shows table
Fixed issue with add existing shows and show object not being populated into core show cache

Fixed issue with invalid episodes being created, refactored episodes to be added to database only when calling episode object save function
Refactored default value for scene_season, scene_episode, scene_absolute_number, xem_season, xem_episode, and xem_absolute_number to be -1
Refactored TVShow class to save it self only when its save function is called
Fixed missing scene_value variable
Added functions to TVEpisode class to logically return indexer, scene, or XEM season/episode/absolute numbering
Fixed column offset for show display page

Bumped main database version to 13
Added scene option throughout SiCKRAGE
Added lock to queue worker, acquire and release lock when notifying workers
Fixed issue with removing episode from show episode cache
Removed QuickSearch cache class and database tables, using data to populate quicksearch entries from main database instead

Refactored core web session exception handling
Feature added that allows searching episodes by collection format
Refactored name parser match scoring
Refactored name parser regex placement for mvgroup
Refactored show search types into SearchFormats class
Refactored main db to v12 and added in code to migrate old-style show search options to new-style show search formats
Refactored core API web session exception handling
Refactored providers by removing archetorrent and elitetorrent
Fixed season folder show option, needs to be invested as it controls flattening of folders show option
Refactored requirements.txt, updated misc packages

Fixed #SICKRAGE-APP-4CE - name variable empty when searching API for IMDb ID caused 404 Client Error

Fixed #SICKRAGE-APP-4BS - not enough values to unpack (expected 2, got 1) error when trying to retrieve scene exceptions by season

Removed retrieval of show exceptions on app startup.
Fixed width issue for show selector on display show view.

Fixed issue with TorrentRSS provider and base url.
Fixed `NoResultFound` when show is being removed but still in cached shows list.
Added regex checking of imdbID when updating imdb info for show.

Added SR API endpoints for scene exception retrieval.
Added scene_exceptions and last_scene_exceptions_refresh properties to TVShow class.
Added retrieval of scene exceptions method to TVShow class.
Added get_scene_exception_by_name to TVShow class.
Added get_scene_exception_by_season to TVShow class.
Added update_scene_exceptions to TVShow class.
Fixed charmap issue with AniDB.

Added `no_create` arg to TVShow class method `get_episode`, prevents TVShow class method `wanted_episode` from creating TVEpisode objects.
Added cleanup code for cache database scene names table to remove dupes.

Calls to database from TVShow/TVEpisode classes are done now with session contexts and with statements.

Refactored TVShow class to use get_episode instead of calling TVEpisode class directly when populating shows episode cache.
Removed type hints for now, will make a project of adding type hints later on.
Refactored ajax calls for episode search status to always pass a series ID.

Refactored episodes attribute on TVShow objects to cache TVEpisode objects and persist.
Refactored usage and removed get_all_episodes method from TVShow class.
Refactored total show size to account for multipart-episodes.
Added delete_episode method to TVShow class to remove episode from shows episode cache.
Refactored usage of TVEpisode class method delete_episode to be called by TVShow method delete_episode instead of directly.
Fixed endpoint call for getting annoucements from SR API.

Refactored TVShow and TVEpisode objects to store changes to their local data container, calling save method will update database with data from local container, helps prevent database lock issues.