Merge pull request #445 from ably/release/1.2.8

Release version 1.2.8

Merge pull request #438 from ably/release/1.2.7

Version 1.2.7

Merge pull request #427 from ably/release/1.2.6

Release 1.2.6

Merge pull request #404 from ably/release/1.2.5

Release version 1.2.5

Merge pull request #389 from ably/release/1.2.4

Release 1.2.4

Merge pull request #383 from ably/release/1.2.3

Release 1.2.3

Merge pull request #366 from ably/release/1.2.2

Release 1.2.2

Merge pull request #363 from ably/release/1.2.1

Release 1.2.1

Merge pull request #349 from ably/release/1.2.0

Release 1.2.0

Update CHANGELOG.md