dsp-api v15.1.0

Bug Fixes

• users: fix bug adding user to group or project (DEV-184) (#1925) (a24a320)

Enhancements

• add value objects to list routes - old and new (DEV-65) (#1917) (7752a36)

Maintenance

• bump sipi version (DEV-188) (#1931) (d302b5e)
• change license to Apache 2.0 (DEV-82) (#1924) (2d39a1f)
• deps: bump mkdocs from 1.1.2 to 1.2.3 in /docs (#1927) (cbbf1b6)
• fix warnings (DEV-80) (#1929) (1368769)