set version to 0.12.1

bump version to 0.12.0

0.11.2 final

bump version to 0.11.1

0.11.0 final

bump version to 0.10.2

set version to 0.10.1

search-replace: rename --multisite flag to --network

it's more consistent with other commands

fixes wp-cli#504; see wp-cli#501

set version to 0.9.1

set version to 0.9.0