bump to v0.1.23

Signed-off-by: Antonio Murdaca <[email protected]>

bump to v0.1.22

Signed-off-by: Antonio Murdaca <[email protected]>

bump to v0.1.21

Signed-off-by: Antonio Murdaca <[email protected]>

bump to v0.1.20

- support image-spec v1.0.0-rc5

Signed-off-by: Antonio Murdaca <[email protected]>

bump to v0.1.19

Signed-off-by: Antonio Murdaca <[email protected]>

bump to v0.1.18

Signed-off-by: Antonio Murdaca <[email protected]>

bump to v0.1.17

Signed-off-by: Antonio Murdaca <[email protected]>

bump to v0.1.16

Signed-off-by: Antonio Murdaca <[email protected]>

bump version to 0.1.15

Signed-off-by: Antonio Murdaca <[email protected]>

Merge pull request containers#85 from runcom/bump-v0.1.13

bump to v0.1.13