Fix pass by reference bug and add logging

1.1.0

Add optional logging

Support getting varbinds from message

1.0.0

Use env. prefix for variable

Automate build and deploy through gitlab actions

0.9.5

Use env. prefix for variable

Add getting varbinds from message

v0.9.4

Update gem-push.yml

v0.9.3: Add support to use message fields in varbinds

Also simplifies the syntax to define the varbinds
Value prefixed with ! will eval the value
Value prefixed with @ will retrieve the field from the message