Experiment issues

[klowrey]

In the experiment struct, one can save data but cannot access.

ie:

ex = Experiment("/tmp/tmp.jlso")
ex[:test] = 1
println(ex[:test])

will claim that :test key already exists, attempt to create a new key due to the collision, but then not find the key as there's no key. seems like the logic in _handlecollision is a little wonk.

[klowrey]

of course ex.file[:test] returns bytes.

the logic in _handlecollision seems fine, but not sure how to return info from ex.file in the right types....