New Rule: Allocate (e.g., allocate payment to outstanding orders) - with sample, [described in wiki, here](https://github.com/valhuber/LogicBank/wiki/Sample-Project---Allocation).
Available on [PyPi](https://pypi.org/project/logicbank/) - unchanged from v0.2.0
v0.2.0 tweaks the prior implementation in favor of rules (vs. code), which makes the `while_calling_allocator_default` more useful.
My bad - this fixes some install issues in v0.2.0 (left over remnants since allocation).