Wrong style for state report for TicTacToeEnv()

[hespanha]

A call to
state(env::TicTacToeEnv, Observation{BitArray{3}}())
does not result in the correct style.

The error can be "seen" using:

env = TicTacToeEnv()
display(state(env, Observation{String}(), current_player(env))) # works as expected
display(state(env, Observation{String}()))                      # works as expected
display(state(env, Observation{BitArray{3}}(), current_player(env))) # works as expected
display(state(env, Observation{BitArray{3}}())) # reports state default style: Observation{Int}

A simple fix is to the following line to TicTacToeEnv.jl

RLBase.state(env::TicTacToeEnv, ::Observation{BitArray{3}}) = env.board

[jeremiahpslewis]

Hey! Thanks for the bug report! Would you mind creating pull requests for your fix, ideally with a new unit test that catches the error?

[hespanha]

Done.
Joao