2.0.0 is mostly a maintenance release. There are only a few changes beyond 1.9.1 as noted below. The major driver of this update is to update the yargs dependency to a more recent version without security issues.

Breaking Changes

• Supported Node Versions were set to match the node release schedule which at the time of writing includes Node 12.x, 14.x, 16.x and 17.x
• The yargs dependency was updated to ^17.2.1 to mitigate a security issue.
• The Showdown license has been changed from BSD-3-Clause to MIT

Bug Fixes

• allow escaping of colons (25c4420)
• reduce npm package size (35730b7), closes #619

Features

• Added ellipsis option to configure if the ellipsis unicode character is used or not. ( Thanks @VladimirV99 )
• Added a default security policy. Please report security issues to the issues tab on GitHub.