Added
* [125](https://github.com/python-qt-tools/PyQt5-stubs/pull/125) on `QtWidgets.QMessageBox`, enumerators are also attributes of their enumerations
* [99](https://github.com/python-qt-tools/PyQt5-stubs/pull/99) enable mypy's strict mode
* [92](https://github.com/python-qt-tools/PyQt5-stubs/pull/92) add `Sequence` methods and `.__setitem__()` to `sip.array`
* [94](https://github.com/python-qt-tools/PyQt5-stubs/pull/94) add several operators to `QIODevice.OpenMode` and `QIODevice.OpenModeFlag`
* [93](https://github.com/python-qt-tools/PyQt5-stubs/pull/93) test against 3.5, 3.6, 3.7, 3.8, and 3.9
* [71](https://github.com/python-qt-tools/PyQt5-stubs/pull/71) update to PyQt5 5.15.1
* [56](https://github.com/python-qt-tools/PyQt5-stubs/pull/56) adds `pyqtBoundSignal.__getitem__()` allowing for indexing
* [51](https://github.com/python-qt-tools/PyQt5-stubs/pull/51) adds `pyqtBoundSignal.signal` hinted as `str`
Changed
* [129](https://github.com/python-qt-tools/PyQt5-stubs/pull/129) fixes `QThread` and `QNetworkAccessManager` signals
* [109](https://github.com/python-qt-tools/PyQt5-stubs/pull/109) `.__or__()` for `QMessageBox.StandardButton` and `QMessageBox.StandardButtons`
* [126](https://github.com/python-qt-tools/PyQt5-stubs/pull/126) fix `QCoreApplication.instance()` return type to be optional
* [102](https://github.com/python-qt-tools/PyQt5-stubs/pull/102) fix `pyqtSlot` parameter typing and overloads
* [104](https://github.com/python-qt-tools/PyQt5-stubs/pull/104) `sip.voidptr` handles integer values and sequences and takes `self`
* [103](https://github.com/python-qt-tools/PyQt5-stubs/pull/103) `pyqtBoundSignal.disconnect()`'s `slot` parameter is optional
* [100](https://github.com/python-qt-tools/PyQt5-stubs/pull/100) fill generic parameter as `sip.array[int]` for QtDataVisualization textures
* [92](https://github.com/python-qt-tools/PyQt5-stubs/pull/92) remove self from `qDefaultSurfaceFormat()` and `qIdForNode()`
* [83](https://github.com/python-qt-tools/PyQt5-stubs/pull/83) fixes `sip.array` to be generic
* [79](https://github.com/python-qt-tools/PyQt5-stubs/pull/79) fixes extra class layer in several modules
* [57](https://github.com/python-qt-tools/PyQt5-stubs/pull/57) fixes `PYQT_SLOT` to allow callables returning any object
* [56](https://github.com/python-qt-tools/PyQt5-stubs/pull/56) fixes `pyqtSignal` as a descriptor and moves `.emit()`, `.connect()`, and `.disconnect()` to `pyqtBoundSignal`
* [54](https://github.com/python-qt-tools/PyQt5-stubs/pull/54) fixes `pyqtSignal.connect()` and `pyqtSignal.disconnect()` to support `QMetaObject.Connection`
* [59](https://github.com/python-qt-tools/PyQt5-stubs/pull/59) fixes `QGuiApplication.lastWindowClosed` to be a signal
* [58](https://github.com/python-qt-tools/PyQt5-stubs/pull/50) improves `QObject.findChild` and `QObject.findChildren`
* [50](https://github.com/python-qt-tools/PyQt5-stubs/pull/50) fixes `QAbstractItemModelTester.FailureReportingMode` attributes
* [46](https://github.com/python-qt-tools/PyQt5-stubs/pull/46) fixes `QCoreApplication` and `QObject` signals
* [48](https://github.com/python-qt-tools/PyQt5-stubs/pull/48) fixes some signals for `QClipBoard`, `QWindows`, `QQuickView`, `QQmlApplicationEngine` and `QQmlEngine`
* [49](https://github.com/python-qt-tools/PyQt5-stubs/pull/49) fixes `QAbstractItemView.setModel()` to accept `None`
Removed