Add a 'value' wrapper to the top-level q module.
Increment version number after release.
Correctly adjust Vector.shift on pop.

There was an off-by-one error when shrinking the size of the
root, caused by accessing the new root rather than the current one.
Fixes #3
Double-check that the test still works for items -> 0 -> non-zero
Add .size to Map objects.
Whitespace cleanup.
Add .items() and .keys() to HashMap and StringMap.
Make find explicitly (and accurately) return the first item for which the finder is true.