release 4.0.0 (mledoze#382)

release 3.0.0

release 2.1.0

release v2.0.0

update licence label in package.json
replace 'maintainers' field by 'author' in package.json
fix description in composer.json and bower.json

release v1.8.0

bump to v1.7.7 (see mledoze#164)

bump to v1.7.6 (see mledoze#162)

bump to v1.7.5 (see mledoze#161)

release v1.7.4

prepare release v1.7.3