Release 1.5.2

Notable changes:

• Issue 1008 - Improve Sec-WebSocket-Protocol usability (PR 1034 by @marci4)
• PR 1070 - Prioritise using provided socket factory when creating socket with proxy, by @marci4
• Issue 1026 - Force client to use the valid schema (PR 1025 by @yindex)

Check out the changelog and the milestone for more information.

A special thanks to all the contributors of this release:
@dota17
@yindex
@alphaho
@pawankgupta-se