1.7.2: Fix flow types

• Remove flow types for await and awaitPromises that cause errors in flow 0.55.0.

1.7.1: Fix delay dispose

• Fix case where delay() may not dispose pending tasks (#490)
• Allow ES Observable subscribers to omit properties (#484)

1.7.0: Add flow types

• Add Flow types (#478)
• Improve TypeScript types for higher-order combinators: join, switchLatest, mergeConcurrently (#483)

1.6.2: Surface unhandled errors in ES observable subscribe()

• Rethrow errors when an error propagates to a subscriber without an error method.

1.6.1: Fix await() type defs

• Constrain type of this in await method, add awaitPromises aliases (#475)

1.6.0: Improve thru() types, fix debounce dispose

• Make thru fully parametric in its return type, allowing functions that return other types, e.g. promises. (#473)
• Fix issue where debounce was not disposing its upstream source (#472)

1.5.1: Fix slice regression

• Fix regression in slice (and consequently, take) that prevented some fast sources from being disposed immediately. (#468)

1.5.0: Add TS type guard for filter()

• Improve filter Typescript type inference by adding type guard (#460)

1.4.1: Fix Scheduler TS type refs

• Fix Scheduler delay and periodic types (#454)

1.4.0: Allow ES Observable `subscribe` to accept a function

• Allow ES Observable subscribe to accept a function, to align with other libs. (#448)