Pymodaq

**Full Changelog**: https://github.com/CEMES-CNRS/PyMoDAQ/compare/3.5.3...3.5.4

**Full Changelog**: https://github.com/CEMES-CNRS/PyMoDAQ/compare/3.5.2...3.5.3

**Full Changelog**: https://github.com/CEMES-CNRS/PyMoDAQ/compare/3.5.0...3.5.1

many changes related to the new version of pyqtgraph
pymodaq can now be used with either pyqt5 or pyside2 (even if with pyside2 some issues remains)

What's Changed
* daq_logger refactoring using CustomApp base class by seb5g in https://github.com/CEMES-CNRS/PyMoDAQ/pull/65
* Pyqtgraph by seb5g in https://github.com/CEMES-CNRS/PyMoDAQ/pull/66
* Viewers by seb5g in https://github.com/CEMES-CNRS/PyMoDAQ/pull/67
* Testing by seb5g in https://github.com/CEMES-CNRS/PyMoDAQ/pull/68


**Full Changelog**: https://github.com/CEMES-CNRS/PyMoDAQ/compare/3.4.1...3.5.0

**Full Changelog**: https://github.com/CEMES-CNRS/PyMoDAQ/compare/3.4.0...3.4.1