adding \ before <tag> should render it as "<tag>" and not parse as html

[ghost]

source code

how it should be

how it is now

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what should be happening here is \ before any control-symbol turns it to a simple char, making < to an <, and since tag> is not a valid html – parser should leave it as text like it is with other things, like \# H1

test:

regular H1

# escaped H1

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in fact, github has escape for EVERY punctuation symbol as an option: https://github.github.com/gfm/#example-296

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/rel showdown#374