v4.12.16

Bug Fixes

• dont write to elementType if it is not defined, fixes #1357 (1072303)
• explain why RHL could not be activated, fixes #1362 (9561d66)
• more @types/react to dependencies, fixes #1359 (af42c1a)
• use logger.warn instead of console to report tail update, fixes #1386 (fbc890a)