Core explanation of values
Tests and fix for Vector.filter
Tests and fix for Vector.forEach so it uses the correct context.
Merge pull request #1 from sbrandwoo/vector-forEach-context-fix

Vector forEach context fix
Merge pull request #2 from sbrandwoo/vector-filter-fix

Tests and fixes for various Vector functions
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