commission was not considered

[yuanzhanghu]

First of all, thanks for the source code of reinforcement learning on stock trading, it was really helpful!

From your env setup, i found that commission was not considered, and looked like you also have unlimited total positions, which might cause huge number of trades in the whole episode, which might eat up all your profits.

[asdfqwer2015]

Same issue.

[QLi007]

The same. There should be a variable to limit the maximum holding