move VEC to type bits

reflow

fix abstract and ref

ack alexandre

rename spinbit-delta, move vec to quic-spin, move a bunch of stuff to the appendix.

state reset

editorial

Merge pull request #17 from britram/edits-mk

more nits

nit

Merge branch 'edits-mk' of github.com:britram/draft-trammell-quic-spin into edits-mk

edits on sec 3 and appendix (vec)

edits section 1 and 2

edits section 1 and 2

Merge pull request #16 from britram/piet-vec