* Replace markdown-it-py with small function in common/
* simple test
* unused
* lock
* linting fixes
old-commit-hash: 5265d13fe087972311592febd4071c16cece65e0
* updated: finish system/ move
* add those back
* skip that
* skip whole file
* one more time
old-commit-hash: 73b02f2cda858d4ad08bc7fa4116d0d11ff79a02