phpdoc fixes
new RELEASE_NOTES structure for 0.11
merge e0337153a25a1666ec469086ec55a5a92b0f5323 to 22626fa2637df788608d6c87980f4bdf1ab65efc (from 0.11)
new RELEASE_NOTES structure for 1.0 (again, this does not include 0.11.6-dev release notes until they are released. also, no merging is necessary here because release notes are always only for stable versions, so we don't merge any 0.11 release notes fragments until *after* 1.0
better version placeholders :D