Migration to v5
===============

v5 has the same external API as v4, only internals were changed. Plugins that introduce block elements might need an update.

## For users

External API did not change.

- If you use `markdown-it` with plugins, make sure to update them.


## For plugin developers

- added `stateBlock.sCount` to calculate indents instead of `stateBlock.tShift`, it only differs if tabs are present:
  - `stateBlock.tShift` is used to calculate a number of *characters* (tab is 1 character)
  - `stateBlock.sCount` is used to calculate the block *offset* (tab is 1-4 characters depending on position)