1.2.5

Full Changelog

Fixed bugs:

• Crypto.getRandomMessageId isn't working as intended #654
• Hosts class is not thread safe #650
• AblyBase.InternalChannels is not thread-safe #649

Merged pull requests:

• Makes the Hosts class safe to be called from any thread #657 (QuintinWillison)
• Fix getRandomMessageId #656 (sacOO7)
• Improve channel map operations in respect of thread-safety #655 (QuintinWillison)