Support dashes (-) for unordered lists

Thanks for sharing this project!

Sadly I was not able to directly convert a markdown snippet copied from logseq (https://logseq.com/). They use dashes (-) for unordered lists which to my knowledge is also valid markdown. 

The dashes are not recognized as unordered lists in J2M. If I manually convert them to stars (*) it works.

Can you support unordered lists using dashes?