Accessor apply() method
This simply supports composing pipeline-like calls on Accessor data. BEFORE:
new_acc = InMemoryDataAccessor(old_acc.data > thresh)
AFTER: new_acc = old_acc.apply(lambda x: x > thresh)
This simply supports composing pipeline-like calls on Accessor data. BEFORE:
new_acc = InMemoryDataAccessor(old_acc.data > thresh)
AFTER: new_acc = old_acc.apply(lambda x: x > thresh)