1.1.12 release

[Loup-Garou911XD]

• Fixed request timeouts being reported as an unhandled error instead of
  a connection problem, which left the plugin manager stuck on a spinner
• Response bodies are now read on the network threadpool rather than on
  the main thread, so a slow server no longer freezes the game
• Index and changelog setup no longer deadlock after a failed fetch
• Fixed the plugin manager failing to load or refresh on networks where
  one of GitHub's edge servers is unreachable; all of the published
  addresses are now tried instead of a single one
• The DNS block workaround now corrects name resolution rather than
  replacing the HTTP and TLS stack, so ordinary requests take the
  standard code path
• Fixed the changelog window erroring out after the settings window had
  been opened