Tdlib Ruby Versions Save

• Rescue exceptions in update manager thread

• Fix client dispose

Extract types schema to separate gem

• Support tdlib 1.6

• Support tdlib 1.5
• Fix TD::Client#dispose race condition and client crash

• Generated types and client functions
• Async handlers
• Use ffi instead of fiddle
• Use Concurrent::Promises
• TD errors handling in promises
• Add use_file_database setting to config

• Return promises from TD::Client#broadcast
• Add #fetch as alias to #broadcast_and_receive

• Fix recursive locking in nested handlers

• Add proxy support

• Fix some potential deadlocks