Merge pull request #558 from ably/release/0.8.0

release: 0.8.0

Merge pull request #545 from ably/release/0.7.0

Release/0.7.0

Merge pull request #529 from ably/release/0.6.0

Release/0.6.0

Merge pull request #504 from ably/release/0.5.1

release: prepare v0.5.1 release

Merge pull request #500 from ably/release/0.5.0

release: prepare docs for 0.5.0 release

Merge pull request #455 from ably/release/0.4.0

chore: 0.4.0 release

Merge pull request #453 from ably/release/v0.3.1

chore: 0.3.1 release

Merge pull request #431 from ably/release/0.3.0

chore: 0.3.0 release

Merge pull request #353 from ably/release/0.2.1

Release/0.2.1

Merge pull request #345 from ably/release/0.2.0

Release/0.2.0