releng for 2.1.0-beta3

releng for 2.0.4

update release date to match that of 2.0.3

update version to 2.0.3

update changes

set version to 2.1.0-beta1 / 0.12.0

add Fastly to copyright of the file changed (a lot) by @deweerdt

set version to 2.0.0

Also updates the minor part of the library version to indicate breaking change in the library API due to h2o#875 (see h2o#794 for the numbering rule).

Merge branch 'master' into v2.0.x

add CVE-ID