feat: add a metric to ActorSystem and PID (Tochemey#594)

docs: update README.md

Signed-off-by: Arsene <tochemey@hotmail.com>

fix: fix logging

refactor: allow rebalancer to be restarted in case of failure

refactor: fix code readability

refactor(enhancement): refactor the actors data structure (Tochemey#543)

docs: add ForwardTo and RemoteForward doc

refactor: refactor test to cater for DNS name as host

fix: enhance shutdown process (Tochemey#530)

chore(deps): update patch go modules