I. Architecture

Key of v2 architecture

• what makes code SOLID
• what is program -> a set of procedures
• escape from world of nouns
• mix OOP and FP

Divide program to components

Remove premature optimizations

Separate

notifications and data

II. Type-friendly code

mypy(매운맛)

--strict

III. Tests

Purge meaningless tests

Purge global fixtures and consts

IV. Toolchains

Makefile

The mighty git hook