v1.0.2

Changelog (#4)

• build: remove package-lock (fa4469c)
• build: remove unused script (66579ff)
• ci: update node version (f186ba2)
• docs: improve usage (6b7c89a)
• refactor: split lib (24bd2d3)
• refactor: update .gitignore (f2f7d25)
• style: add prettier (cd2ee24)
• test: split and improve tests (b7cbc2f)