Previous version of poke-env used the same data files for every generation. This led to incorrect data being used for older formats.
This release adds gen specific move and pokedex files, for gens 4 to 8.
It also add a handler for message and -message battle messages.

• Add dynamax moves
• Add multiple effects
• Better handling of illusion and zoroark / zoroa / ditto
• Multiple misc bug fixes

• Add _UNKNOWN enum values for several poke-env Enum classes
• Add custom PS_ERROR log level (level 25)

This release introduces two minor bug fixes:

• REFLECT was added to effects, as it is used as such in gen 1 by pokemon showdown
• A typo in Pokemon._start_effect was preventing some effects from being tracked correctly

• Add dynamax parsing / generation in teambuilder submodule
• Switch pokemon-showdown recommended version from custom fork to smogon master with custom CLI flags
• Add Effect counters
• Add Weather counters
• Add Field counters
• Add first turn per pokemon tracking
• Add status counters
• Parse cant messages
• Add sets of special Effects and Moves and matching properties in their respective classes

Misc bug fixes:

• Fix a rare issue in vgc hp parsing where a g character can appear in hp update information
• Add CELEBRATE and G_MAX_CHI_STRIKE effect
• Metronome battles are now double battles
• Add dedicated powerherb and sky drop dedicated cases for battle state tracking

This release transforms the way side conditions are tracked in Battle objects: instead of being represented as a set of SideCondition objects, aide conditions are now dict mapping SideCondition to ints.

This release adds an init option to each Player class: start_timer_on_battle_start. Setting it to True will make the player request the timer at the start of each battle.

This release introduces preliminary gen 4, 5 and 6 support. It introduces and / or adapts missing mechanisms and showdown quirks that are specific to these past gens. Additionally, it:

• Adds Gen4EnvSinglePlayer, Gen5EnvSinglePlayer and Gen6EnvSinglePlayer classes
• Adds defaults battle formats for EnvPlayer children classes. In particular, GenXEnvSinglePlayer now automatically defaults to genXrandombattles. EnvPlayer defaults to gen8randombattles.
• Fixes misc issues in Effect names.

This releases adapts to updates in showdown's protocol and introduces a more tolerant system for dealing with unrecognized showdown messages (ie. log a warning instead of raising an exception).

This release adds Enum values in poke_env.environment.effect.Effect.