bump version to 0.12.0

[README] update for 0.11.5

[README] update for 0.11.4

[README] update for 0.11.3

nw12: rebase fix for mac

[README] update for 0.11.2

[README] update for 0.11.1

[README] update for 0.11.0

[README] update for 0.10.5

bump version to 0.10.4