lowerLimit() -> min() etc

Fit/Adapter/MinimizerAdapter.cpp

Fit/Param/AttLimits.cpp

Fit/Param/AttLimits.h

Fit/Param/RealLimits.cpp

Fit/Param/RealLimits.h

GUI/Model/Job/FitParameterItem.cpp

GUI/View/Instrument/ScanEditor.cpp

GUI/View/Numeric/DoubleSpinBox.cpp

GUI/View/Numeric/NumWidgetUtil.cpp

GUI/View/Numeric/NumberUtil.cpp

GUI/View/ParEdit/CustomEditors.cpp

GUI/View/ParEdit/ParameterTuningDelegate.cpp

Tests/Py/Fit/minimizer_api.py

Tests/Unit/Fit/AttLimitsTest.cpp

Tests/Unit/Fit/ParameterTest.cpp

Tests/Unit/Fit/RealLimitsTest.cpp

auto/Wrap/libBornAgainFit.py

auto/Wrap/libBornAgainFit_wrap.cpp