Add stable tag

[iverberk]

Please tag the master branch so that composer configurations can be fixed to a certain commit.

[naneau]

@iverberk master tagged with 0.0.7

[spekulatius]

Hello @naneau

it would be great if we could tag a new version - the last tag is quite a while ago.

Cheers,
Spek

[redthor]

Fwiw - I created https://github.com/doesntmattr/semver with tag 1.0