don't removeChild with an already removed node
Merge branch 'master' of github.com:telent/schuko
add a multimethod for ease of extending the transitions repertoire
remove-node helper fn
by-selector requires the NodeList to be ISeqable
unused
add-class and remove-class
get-style retrieves computed style for an element
fix the fade effect
rearrange to create a new DIV for each new slide instead of reuusing an old one that may have had weird css styles applied to it