Advent of FPGA Challenge

Thanks for sharing this! (I'm one of the HW engineers helping organize this)

We are really excited to see what people can do with this. Hardcaml can look really strange if you haven't tried it before, but this is a great chance over the holidays if you're a student (or professional) writing RTL and want to give something new a try! Soon we are also going to upload a simple template to the Hardcaml GitHub to help get people started who haven’t tried it before.