tag - v0.15.0

~/src/repo$ release help tag
NAME:
   release tag - Create tag and attach release note to HEAD

USAGE:
   release tag

DESCRIPTION:
   Analyze commits and create tag and release note.
         
   HEAD's parents are traversed and changes are collected from commits that
   haven't been released yet.

   First encountered tag from each branch is compared and semantically
   latest is selected to be the base for calculating the next version.

   Tag and release note are created using the collected information.

   If commit messages indicating a version bump are not found, the command
   exits with non-zero value.