implement hnreader-mode

[csantosb]

Use a dedicated mode, instead of using org. This way, one may declare hooks, mode variables, etc. in order to customize behavior.

[thanhvg]

Thanks for the PM, but a major mode is overkill to me. Will a minor mode work for you?

[csantosb]

Will a minor mode work for you?

A minor mode would be equivalent to checking *HN* buffer name from an org hook, and then performing customisation. The idea of a major mode, built upon org, is having access to a keymap and hooks, from where one might include minor modes to customise experience. This is a more elegant approach, in my opinion, giving a chance to adapt hnreader to one’s needs. By default, a major with no customisation at user side would be equivalent to what exists now, plain org.