wake up this branch
add datastore object
start sketching out chunks
more sketching for chunks
more changes to support chunks
changing what blocks do

now they are just collections of trials, rather than having significant
functionality for running the experiment. the running code is now part
of the jsPsych object.
starting to fill in chunk behavior
more work on chunk code
various bug fixes to get chunks working
implements while chunk

related to Issue #8
more work to support while chunks

Issue #8
replace block.next with jsPsych.finishTrial();
replace block.writeData with jsPsych.data.write
removing block from plugin.trial call
trying to implement nested chunks

this is really broken right now.
reconfiguring chunk to be tree-like

now there is a root chunk which contains the entire experiment, with
all other chunks being branches off of the root. lots of tweaking to
chunk ID code to get dynamic IDs depending on how many iterations of a
chunk have happened.
more fixes for nested chunks

- fixed method to get data associated with chunk ID
- isComplete now works for root type chunk
cleaning up stuff that isn't needed.
Merge pull request #69 from jodeleeuw/dev-chunks

Dev chunks