added ComplexParameter to ParameterList
added support for complex pars to Strategies
added support for new pars to BW and Wigner
TreeNode update (new pars/strategies), bugfix wigner
bugfix strategies: partype of output resetted
bugfix strategies: partype in constructor, output by ref
FunctionTree Update, BWSum FctTree setup and fit
Bugfixing FcnTree (masses), now consistent with calculation
merged AmpSumIntensity (rr->mag change and fcntree gen