add method to download all play-offs boxscores for particular player & year

[rw30]

hi,

there's a method to do it for regular season games ( client.regular_season_player_box_scores() ) but the not for PO games. I'd appreciate if this can be added.

thanks in advance.

[jaebradley]

@rw30 sorry about the delay in resolving this - the playoff_player_box_scores method should be available as of 4.10.0.