Support external ref list, support more platform.

[drmingdrmer]

Fixes

fix: when output-dir is not asset-output-dir, it generates wrong url.

fix: use the title to generate ref list text, instead of using link id. Make the ref-list more human friendly.

fix: output ref-list and ref-def for only used links. Unused links will not appears on the bottom.

Features

new-feature: add platform minimal_mistake: to convert md to minimal_mistake compatible version

new-feature: add --rewrite to rewrite generate url, when one need to customize urls before uploading assets.

new-feature: add arg "--jekyll" to respect jekyll syntax markdowns.

Doc

doc: fix readme: update according to latest changes

new-feature: add option --refs to add external reference definition

refactor: remove unused funcs

doc: update links in README to latest converted examples

doc: fix version

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This discussion was created from the release Support external ref list, support more platform..