v2.18.0

markbind-cli

User Facing Changes

Breaking Changes

(#28) Add $$...$$ syntax for underline text (#1476)

In moving toward a markdown syntax for #28, v3 will be shifting completely toward $$...$$ delimiters for underline text,
discarding the existing ++...++ underline syntax.

This addition facilitates the migration process to v3, logging out warnings where the old underline syntax is used.

Existing content that displays raw $$...$$ symbols may be rendered into underlined text with this change.