Merge pull request gridstack#1810 from adumesny/master

rev 4.2.6

Merge pull request gridstack#1773 from adumesny/master

JQ droppable fix for website

Merge pull request gridstack#1770 from adumesny/master

v4.2.4

Merge pull request gridstack#1753 from adumesny/master

rev 4.2.3

Merge pull request gridstack#1742 from adumesny/master

v4.2.2

Merge pull request gridstack#1735 from adumesny/master

v4.2.1

Merge pull request gridstack#1721 from adumesny/master

v4.2.0

Merge pull request gridstack#1715 from adumesny/master

v4.1.0

Merge pull request gridstack#1697 from adumesny/master

v4.0.3

Merge pull request gridstack#1690 from adumesny/master

v4.0.2