v1.2.0

New metrics for built-in events:

• phoenix_channel_join_duration_<duration_unit>;
• phoenix_channel_receive_duration_<duration_unit>

v1.1.0

• update phoenix to 1.3
• update prometheus_ex to 1.3
• use credo
• :phoenix_controller_render instrumenter

v1.0.1

Update README.md

The very first one

v1.0.0

update prometheus_ex and bump to 1.0.0