v0.4.4

Changed

• NeuroCurator is now installable simply with pip3 install neurocurator on macOS, Linux and Windows.
• Simplify even more the 'Getting Started' section of the README.
• Add a Roadmap section to the README to make visible the high level activities planned.
• Add instructions to upgrade NeuroCurator to the latest version.

Technical

• Port NeuroCurator to Qt 5 which removes legacy dependencies (Qt 4, PySide, Python 3.4).
• Normalize calls to super() to the Python 3 style.
• Use Qt object names directly, without the namespace name as prefix, except for the namespace 'Qt'.

Fixed

• #6
• #12
• #56