TWEAK: Validate destination interface{} is a pointer because it was an unfinished TODO. NOTESTS
TWEAK: Remove map support from LoadAll because it's easily implemented.
CLEANUP: Fix out of date comment because it was wrong.
FEATURE: Add (*SelectBuilder) LoadAllValues to load multiple rows of values into a slice.
TWEAK: Add LICENSE file because we should be explicit about our license.
CLEANUP: Start adding a README with Installation instructions, examples, etc.
TWEAK: Only allocate one struct holder for each query because it reduces allocs dramatically for large datasets.
TWEAK: Return from the interpolator early in some cases to prevent unnecessary work/allocations.