BMDanalyse v0.2.0

• Add setLevels to imageWin Viewbox image showing bone loss and gain. This is now a requirement in pyqtgraph-develop.
• Convert all images to 8-bit upon loading.
• Added MatplotlibWidget.py - This is modified from pyqtgraph to account for changes in more recent versions of matplotlib i.e. since matplotlib 1.4.0, NavigationToolbar2QTAgg no longer exists
• Add Analysis toolbox to side panel
• Restructed files. MainWindow and TableWidget classes moved to own modules
• Added ROI selection management to MultiRoiViewBox class to handle case where ROIs are overlapping and the lower one could not be selected
• Update BMDanalyse software requirements. No longer support Python 2.6, but should still work.
• Use setuptools rather than distribute for Python packaging