Release 4.1.0-beta.3

• Merge branch 'master' of github.com:planttheidea/micro-memoize into issue-97-internal-types-usage (1af6c87)
• Release 4.0.15 (ad60ace)
• update CHANGELOG (c6b3554)
• tweak the es-to-mjs script to also copy index.d.ts (#100) (3ed3d03)