Bump modules (#174)

Bump dependencies (#108)

* Bump dependencies

* Go 1.18

* go mod tidy

Amend module path for v2

Add default_module and target options

If default_module is set then the exporter will use that when the module
parameter isn't set.

If target is set for a module then the module will use that target,
ignoring the target parameter completely.

Release 2.3.1

Release 2.2.1

release 2.2.0

release 2.1.1

release 2.1.0

release 2.0.0