1.15.7

Changelog for 1.15.7:

• PR #2349 Remove code to delete deprecated volume #2327 by @pchico83
• PR #2319 Metrics Fixes by @pchico83

Commits
40da75c Warning if a service/volume in a stack already belongs to a different stack
d551675 Remove code to delete deprecated volume #2327

Changes: 1.15.6...1.15.7

Generated by Derek