Performance

• Add compound indexes for MongoDB

Bugfixes

• display _context when printing _metadata a0c78f2
• _metadata._context.default_flow returns the correct value 2a8e3ba

Features:

• Add *=, /=, %= #426
• Multi bot #423
• Insert flow #425

Improvements:

• set variable step limit #427
• Dynamodb TimeIndex querys #424
• Update neon #428

Bugfix

• get empty modules form S3 for Backward compatibility