deps: proxy-addr@1.0.1
deps: connect@2.19.2
3.10.1
deps: connect@2.19.3
3.10.2
use vary@0.1.0

with backwards compatibility

closes #2161
deps: debug@1.0.0
build: use compressed formats in package
deps: connect@2.19.4
3.10.3
Merge tag '3.10.3'