Speriment

Uploads `sperimentschema.json`.

Release 8 was published incorrectly.

- bug fix for SampleFrom (now work even if you check the json first)
- bug fix for dropdowns (now have an initial blank default option)
- feature additions for resources: in addition to using strings or `SampleFrom`, you can make `Resource` objects which take the filename of the resource and the following optional arguments: `required` (cannot choose an option or advance until the audio or video has finished playing), `autoplay` (plays when it displays), `controls` (show or hide controls).

- add cutoff for training blocks
- preload images and audio
- fix bug in the recording of option feedback

- Added SampleFrom for page and option tags
- Added -j option to speriment-output to create json file instead of csv
- Fixed bug that caused feedback pages to appear in the output file with the wrong iteration number

Patched npm package to fix bug causing some data to not be logged.