v0.3.20

What's new

• Integrating sphinx gallery to run documentation by @agoscinski in #234
• Monitor task: add timeout for monitor task, and support killing by @superstar54 in #247

Fix

• Save task state info in the ctx for checkpoint by @superstar54 in #245
• Create and submit the process using self.submit by @superstar54 in #253

Full Changelog: v0.3.19...v0.3.20