Merge pull request #146 from purescript-web/ie-safe-tagged

Fix `unsafeReadProtoTagged` so it works in IE

MutationObserver API (#139)

* MutationObserver API

* Updated MutationObserverInit

Merge pull request #140 from fehrenbach/dropeffect

Add dropEffect getter and setter on DataTransfer

Update .gitignore

Merge pull request #137 from toastal/export-active-element

export `activeElement`

add `document.activeElement` (#136)

* add `document.activeElement`

* Document -> HTMLDocument from the Node file

* fix Eff type signature

* remove `yarn.lock` and ignore it as well

Merge pull request #135 from beckyconning/contentWindow

HTMLIFrameElement.contentWindow

Merge pull request #133 from coot/popstate-event

Added PopStateEvent

Merge pull request #129 from purescript-web/readyState

Add document ReadyState