Fix order of ::before (best to have at the end)

Rebuild site

Upgrade pandoc-sidenote.lua

Fix note on paragraph after figure

Fix bug with note on first block element

Fix some bugs in sidenote spacing

Forgot to bump the version number

Update docs

Use more const

Also get block-based side notes working

Initial support for block-based side notes

Update instructions to use lua filter

Switch to lua filter

Fix a typo in the landing page

A couple fixes to code blocks (#17)