v0.15.0

Changelog

• 332af69 release: v0.15.0
• b839382 feat(web-relay): universal did:dfos resolver (TS + Go twin, parity-tested) (#141)
• cb0876b docs: rename clear.txt discussion space to "DFOS" (link nce.dfos.com) (#140)
• afcfed3 docs: public-repo prose audit — leak fix, accuracy, consistency, changelog backfill (#139)