Merge branch '3.0.0' introducing several changes:

 - textpath now is a parent element, the lines method of text will return the tspans inside the textpath (#450)
 - fx module rewritten to support animation chaining and several other stuff (see docs when commited)
 - fixed absolute transformation animations (not perfect but better)
 - fixed event listeners which didnt work correctly when identic funtions used
 - added `element.is()` which helps to check for the object instance faster (instanceof check)
 - added more fx specs

1 files changed, 4 insertions, 0 deletions

diff --git a/src/helpers.js b/src/helpers.js
index ee86dc7..4de813f 100644
--- a/src/helpers.js
+++ b/src/helpers.js
@@ -1,3 +1,7 @@
+function is(el, obj){
+  return el instanceof obj
+}
+
 // tests if a given selector matches an element
 function matches(el, selector) {
   return (el.matches || el.matchesSelector || el.msMatchesSelector || el.mozMatchesSelector || el.webkitMatchesSelector || el.oMatchesSelector).call(el, selector);