Update getPlaceholderIndex to ignore invisible elements (#3)

Update getPlaceholderIndex to ignore invisible elements

Merge pull request #2 from mysidewalk/firefox-bug

Fix for firefox not having event.srcElement

version bump 2.1.0-mysw.2

re-minified

updated version to 2.1.3 for yarn to not freak out

Merge pull request marceljuenemann#375 from marceljuenemann/dev

Merge 2.1.0 from dev to master

Merge pull request marceljuenemann#364 from marceljuenemann/dev

Merge 2.0 from dev to master

Merge pull request marceljuenemann#205 from marceljuenemann/dev

Merge 1.4.0 into master

Merge pull request marceljuenemann#99 from marceljuenemann/dev

Merge 1.3.0 into master

Merge pull request marceljuenemann#25 from marceljuenemann/development

Development of 1.2.0