Current behavior

Beginning in v0.12.0, the Markdown lint feature no longer works.

The configurations are still present, as is the configuration-options box introduced in the previous release. However, making a syntax error in your markdown to longer results in a "warning" marker in the margin.

I've attempted toggling the feature, turning on line numbers, etc., to no avail.

Expected behavior

Return to the previous behavior. Making a syntax error in your markdown should result in an interface warning, unless turned off in your configuration settings.

Steps to reproduce

1. Turn on linting
2. Make a mistake, such as starting your document with an H2 rather than an H1
3. Be saddened by the lack of a lint warning

Environment

• Version : 0.12.0
• OS Version and name : Mac OS 10.14.5