v3.4.2

ObjectiveC v3.4.2

Diff since v3.4.1

Merged pull requests:

• Indentation consistency (#58) (@christiangnrd)
• Add .git-blame-ignore-revs (#59) (@christiangnrd)
• Fix typo in UnavailableError error message (#60) (@christiangnrd)
• Normalize macOS version (#61) (@christiangnrd)