migrate newer codiMD

We try to take in newer version, CodiMD(hackMD).

Don't you think so?

[madmas]

@asdfg0280 good suggestion, but as we never cared too much about compatibility, I'd suspect to have too many breaking changes doing so.
What new features or improvement do you miss? Maybe we should port them seperately?

for example npm build is more fast than before version.

faster build makes us more efficiency.purhaps.haha