0.13.0

Features:

• More methods for combining effects asynchronously (#93)
• Effect.race method which allows racing effects against each other asynchronously (#94)
• Effect.timeout method which allows timing out effects (#94)
• Effect.retry and Effect.repeat which allows retrying or repeating effects according to a schedule (#94)
• pfun.schedule for building schedules (#94)
• pfun.random for random number generation as an effect (#94)
• pfun.clock for getting system time and sleeping as an effect (#94)
• More flexible pfun.Intersection type that enables type inference (#94)
• pfun.DefaultModules module provider for pfun provided live modules (Files, Clock, Random, Console)

Fixes

• Support variadic arguments to pfun.effect.combine mypy plugin hook (#92)
• Improve typing of pfun.maybe (#91)

Other

• Rename sequence to gather(#95)
• Rename pfun.ref to pfun.state (#96)