Merge z scoring methods

adresses #421 (closed)

Added

• Parameter axis in flagZScore (enables calculation along data column axis.)

Changed

• deprecated flagCrossStatistics in favor of flagZScore
• deprecated flagMAD in favor of flagZScore
• deprecated parameters norm_func and model_func of flagZScore in favor of Parameter method

Removed

• Support for ZScoring with function composites resulting in operators other than standard or modified ZScore in flagZScore

changed milestone to %2.5.0

added accepted category: public API cleanup/refactoring labels

requested review from @schaefed

assigned to @luenensc

added 1 commit

• f3d3cf8c - added test for win>1 and axis=1

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• aa7e35d2 - blac

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• c0685cbc - removed accidently merged driftFlaggingCookbook from branch

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• 9973a7e8 - removed it now

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• b5e32ac6 - removed miss-refactorings of unknown origin

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• 314924d8 - removed more miss-refactorings of unknown origin

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• abd2ce63 - rolled back to old univarScore func

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• 8d58a7f1 - starts with 'b' and ends with 'c'

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• f73c2cd8 - ...

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• 7e370590 - refactored configs

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requested review from @palmb and removed review request for @schaefed