0.7.1

This release adds Gen9EnvPlayer, as well as a couple of gen 9-related features, bug fixes and misc improvements.

Features:

• Add Gen9EnvPlayer class
• Add update_team method to Player objects
• Add tera support in the Teambuilder submodule, in parsing and team generation
• Add learnset to GenData objects
• Ignore OTS requests

Bug fixes & misc:

• Deal with Metronome and Nature Power move storage bug
• Add THERMAL_EXCHANGE effect
• Add gen9 diagnostic tool singles script
• Make SimpleHeuristicPlayer behave like a random agent in doubles
• Add tera options to random agents in singles and doubles
• Make GenData deepcopy return itself - it's a singleton class

Thanks to @AoifeHughes and @kodecreer for their contributions!