Complete TDD-based unit tests

[Echelon9]

Fixes Issue #1 by ensuring the BloomFilter.Size() probabilistic-based test clears.

• Is it mergable?
• Did it pass the tests on Windows, Excel 2003?
• Did it pass the tests on Windows, Excel 2007?
• Was a spellchecker run on the source code and documentation after changes were made?

[Echelon9]

Confirmed unit tests worked on Excel 2003 (11.8347.8341) SP3.
The testing also successfully utilised the latest version of Excel-TDD provided by @timhall

InlineRunner.RunSuite Specs, ShowFailureDetails:=True, ShowPassed:=True, ShowSuiteDetails:=True

= PASS (6 of 6 passed) = 28/10/2014 8:23:53 PM =========================
+ BloomFilter
  + basic bloom filter
  + jabberwocky
  + basic uint32
  + wtf
  + works with integer types
  + size
===