immer 1.8.1

v1.8.1

on Node.js NPM

1.8.1 (2018-12-12)

• simplify and optimize some areas (3c7f374, 4dd6070, 53e9ce8)
• improve tests

Bug Fixes

• always use assign polyfill (241a648)
• ci: install semantic-release on ci only (4a64599)