Add a git tag about metis

[karypis]

I merged the develop branch into master and added tags both in metis and gklib.

[hadim]

ping @karypis

[gruenich]

Adding a Git tag for having a Git tag is ill-advised. You are actually asking for a new release of METIS. Given that METIS 5.1.0 is from 2013 and the accumulated changes over these seven years, this might be a good idea. But karypis has to decide whether he has the time to make a release (and adding a Git tag).

[hadim]

The current master branch is used in different libs. Adding a git tag just allow proper versioning to package it. You can also call it a new release a new version it's the same.

Without a git tag/new release I can't package METIS.

[hadim]

If the release process is too cumbersome or heavy to do then a simple git tag would be sufficient. Since anyway master is already used downstream by different libs.

[hadim]

I am curious to understand why a git tag only is ill-advised? Isn't better than building a downstream lib from a git tag than a master branch? Especially if some libs are already using master?

[hadim]

Here is the associated PR for the conda package: conda-forge/metis-feedstock#30

I am also happy to continue the discussion about the usefulness of a git tag.

[hadim]

Thank you @karypis