v2.12.0

• Merge pull request #62 from kwonoj/feat-esm a97d463
• docs(readme): update documentation a7c6a2f
• build(package): mark package as side effect free 22b1af4
• test(error): update test cases 3d19ecc
• feat(loggerwithoutcallsite): expose logger without callsite 1fdab3c
• build(tsconfig): emit esm output 59c748b

v2.12.0-0...v2.12.0