changed behavior of 'SPPoint normalize' when normalizing origin

Now returns default [1, 0] point.
recreated unit-test target to get rid of Xcode warnings about XCTest migration
preventing compiler warning in latest Xcode beta
removed obsolete project setting (caused problems in latest Xcode beta)
Merge branch 'master' of github.com:Gamua/Sparrow-Framework
deleted obsolete file (added by accident)