Merge pull request #1208 from ably/release/1.7.2

Release/1.7.2

Merge pull request #1203 from ably/release/1.7.1

Release/1.7.1

Merge pull request #1200 from ably/release/1.7.0

Release/1.7.0

Merge pull request #1189 from ably/release/1.6.1

Release/1.6.1

Merge pull request #1185 from ably/release/1.6.0

Release/1.6.0

Merge pull request #1181 from ably/release/1.5.0

Release/1.5.0

Merge pull request #1178 from ably/release/1.4.2

Release/1.4.2

Merge pull request #1174 from ably/release/1.4.1

Release v1.4.1

Merge pull request #1166 from ably/release/1.4.0

Release/1.4.0

Merge pull request #1156 from ably/release/1.3.0

Release/1.3.0