FloatSlider (#4)

* decent point

* QLabeledDoubleRangeSlider

* update float add tests

* ugly but working

* fix validator

* flexible orientation

* horiz

* warnings are errors

* try convert

* fix signals

* skip signals test on windows pyqt6

examples/float.py

@@ -0,0 +1,28 @@
+from qtrangeslider import QRangeSlider
+from qtrangeslider._float_slider import QDoubleRangeSlider, QDoubleSlider
+from qtrangeslider.qtcompat.QtCore import Qt
+from qtrangeslider.qtcompat.QtWidgets import QApplication, QVBoxLayout, QWidget
+
+app = QApplication([])
+
+w = QWidget()
+
+sld1 = QDoubleSlider(Qt.Horizontal)
+sld2 = QDoubleRangeSlider(Qt.Horizontal)
+rs = QRangeSlider(Qt.Horizontal)
+
+sld1.valueChanged.connect(lambda e: print("doubslider valuechanged", e))
+
+sld2.setMaximum(1)
+sld2.setValue((0.2, 0.8))
+sld2.valueChanged.connect(lambda e: print("valueChanged", e))
+sld2.sliderMoved.connect(lambda e: print("sliderMoved", e))
+sld2.rangeChanged.connect(lambda e, f: print("rangeChanged", (e, f)))
+
+w.setLayout(QVBoxLayout())
+w.layout().addWidget(sld1)
+w.layout().addWidget(sld2)
+w.layout().addWidget(rs)
+w.show()
+w.resize(500, 150)
+app.exec_()