v7.21.1

fixes some compiler warnings

v7.21.0

adds a heartbeat timer to redis subscriptions

v7.20.2: revert: non blocking dns

revert non-blocking dns due to production cluster issues

v7.20.1

fixes standby_image interface

v7.20.0

adds StandbyImage interface
uses non-blocking DNS

v7.19.3

fix transport/http compilation

v7.19.2

fix compilation

v7.19.1

fixes an issue in transport/http where before_request is not set until the next client creation

v7.19.0

allows specifying log level that is routed to STDOUT on a per-module level
the setting is called persistent_log_level and accepts log level strings like "info"

v7.18.3: fix(interface/device_info): user may call connected

fix(interface/device_info): user may call connected