[release-branch.go1.3] doc: document go1.3.3

««« CL 149280044 / ce32e953ef6f
doc: document go1.3.3

LGTM=r
R=r
CC=golang-codereviews
https://golang.org/cl/149280044
»»»

TBR=r
R=golang-codereviews
CC=golang-codereviews
https://golang.org/cl/151170043
1 file changed