v0.9.0

• Added option to retry all HTTP requests when encountering a HTTP network error or gateway error response (502/503/504)
  • Disabled by default, you need to set the default_retry_count field in HTTPAPI (or Client), or the default_http_retry_count field in AppService to enable.
  • Can also be enabled with HTTPAPI.request()s retry_count parameter.
  • The mautrix.util.network_retry module was removed as it became redundant.
• Fixed GET requests having a body (#44).