Update committee members

I've updated to the new committee members.

@warrenseen I grabbed an avatar & basic bio for you; please review 055e9f7e

@joshprice please review dec05a563e

@joho please review 785de03

@elle please review 1e36c3e

@lachie please review 1202b21a (sorry I couldn't find any sort of bio)

@dylanlacey please review 69395c7