v1.0.1

Submitted a number of fixes to ensure substrates and scenarios operate as intended. Other changes not expected to have any impact.

Fixed:

• Python seed is not forwarded to Lua #4
• Second episode using same seed as the first #5
• Bots receive incorrect timesteps in Scenario #3

Full Changelog: https://github.com/deepmind/meltingpot/commits/v1.0.1