Clean up code, update package versions

Merge pull request #4 from RagingKore/fix-default-instance-configurat…

…ion-requirement

Allow Metrics instance to run without any configuration

Separate MeasureTask and MeasureValueTask

Sorting the last PRs

Merge pull request #3 from rogeralsing/patch-1

Fix double invocation of action

In-memory gauge bugfix

Use configureawait

Expose in-memory metrics to public

Address ambiguous invocation

Merget push origin master branch 'pblachut-master'