Add Crown Tundra compatibility

This release adds Crown Tundra data and compatibility.

Minor bug fixes

This releases fixes a couple of bugs:

• Some enumeration values were missing
• EnvPlayer was unable to run play_against multiple times

Add isle of armor compatibility

This release brings poke-env up to date with showdown's post-isle of armor release state.

Minor bug fixes

This release introduces a couple of minor bugfixes:

• In showdown team parsing, pokemons without items caused errors as per #65
• Showdown t: messages could cause errors
• swap-boosts messages were not correctly parsed
• SHP had a couple of small quirks (#61)

Additionally, this release also adds raw stats utilities contributed by @dmizr (#54).

Minor bug fix in `Pokemon.damage_multiplier` and misc changes

This releases fixes a bug arising when special moves (eg. recharge) are used in Pokemon.damage_multiplier by introducing a default returned value of 1 when the argument move has no type.

Other changes:

• RandomPlayer can be found in poke_env.player.baselines as well as poke_env.player.random_player.
• Add choose_default_move method to Player.
• An infinite battle loop could arose with baseline players in very specific situations related to ditto. A fail-safe mechanism has been introduced to evade them: when specific errors are encountered in a battle, the selected move has a small chance of being showdown's default order.

Add `player_evaluation` function, baseline players and helper methods

This release introduces the evaluate_player function, two baseline players (MaxBaseDamagePlayer and SimpleHeuristicsPlayer) and several helper methods (notably Player.damage_multiplier and Player.battle_against).

Add laddering utility

This release adds the ladder method to Player objects, which allow them to search and play games directly on a showdown server's ladder.

Battle objects also now include rating and opponent_rating attributes.

Add default options for `Player` instances

This release introduces default options for Player instances:

• By default, the player configuration is automatically populated with a unique username designed to work on authentication-less showdown servers
• By default, the server configuration points to the default localhost server
• By default, the Player plays gen8randombattles
• The documentation is updated accordingly

Minor performance optimizations

This update introduces minor performance optimizations (15% to 30% reduced runtime on RandomPlayer battles) and new Effects.

Add gen 8 support

Version 0.3.0 includes support for gen 8 single mechanics, including dynamax and gigantamax. It also fixes some minor errors.