Merge pull request gridstack#1335 from adumesny/typescript

TS: more fixed for load()

Merge pull request gridstack#1324 from adumesny/typescript

TS v2.0 release candidate

Merge pull request gridstack#1318 from adumesny/develop

v1.2.0

Merge pull request gridstack#1278 from adumesny/develop

fix 'addWidget' ignores data attributes gridstack#1276

Merge pull request gridstack#1220 from adumesny/develop

fix typo

Merge pull request gridstack#1178 from adumesny/develop

`minRow` tweaks

Merge pull request gridstack#1156 from balajimanoharan/patch-1

README Update : Update name on ember project

Merge pull request gridstack#1152 from adumesny/develop

WebComponent support

Merge pull request gridstack#1136 from adumesny/develop

rev 0.6.3

1 column edit propagation fixes (gridstack#1127)

* more fix gridstack#37 and part2 of gridstack#1120
* editing in 1 column (or few columns) does a better job updating higher layout
* track before and after and move items accordingly. Tracking item swap would be even better still
* column.html demo has been updated to support item delete.
* karma test updated