Bold markdown heading lines

[cpbotha]

Lines that start with one or more hashes # are markdown headings.

Bolding these lines would go a long way towards making notes more readable.

[brightghost]

For some users, lines that start with # are just comments in snippets of code pasted into notes. Please don't add any features that presume we are using a certain conevention for plain text formatting in our notes. Relevant is that Simplenote also does not recognize this formatting standard.

[ernstki]

This is already implemented in the current version (with no regard for whether it's part of a Markdown header or otherwise), so can we close this issue?

@brightghost If the current behavior—that is, that anything that starts with a # is bold-faced—I'd recommend a separate issue to make that configurable.