1.3.0

• Breaking change: Remove step-load feature (now that we have LoadTestShape it is no longer needed)
• More type hints to enable better code completion and linting of locustfiles
• Lots of documentation updates

Bug fixes:

• LoadTestShape.get_run_time is not relative to start of test #1557
• Refactor and fix delayed user stopping in combination with on_stop #1560
• runner.quit gets blocked by slow on stop #1552
• Remove legacy code that was only needed for py2
• Lots more (https://github.com/locustio/locust/blob/master/CHANGELOG.md)