* All Extractor maths replaced with interval arithmetic

 * Improved extractor logic significantly
 * Servers and creatures are persisted in the database
 * Added visual flair
 * Many more test cases - mostly passing!

Persisting servers for fun 0.1.0-preview2

First preview release to show development progress.

Clean up minor issues in tester

Kills a Vue warning that was being throw.
Uses the already existing values for the new VueCreature intiialisation.
Cleans up the code a little.
Adds a visual clue when tests are running - the "pass/fail" label is removed.