DiamondLightSource/Savu: Version 2.0

Core Updates: Restructures framework to allow interchangeable backends: giving the option to replace parallel hdf5 Overhalls the configurator: Adds user, developer and hidden parameters Auto refresh of old and new process lists Allows skipping of incompatible plugins in old process lists Updates savu arg_parser Improves I/O and frame distribution Separates the number of frames transfered from file from the number of frames processed each call to process_frames() Requires big changes to data slicing Auto-mates and optimises number of transfer_frames and process_frames Fixes the number of frames sent to the plugin Closes and re-opens hdf5 files after each plugin to allow immediate access. Allows parameter tuning with lists Fixes Savu profiler Improves installation process Plugin Updates: Adds ccpi-reconstruction plugin Adds ccpi-ring artefact removal plugin (same as tomo_recon) Adds dxchange loader Adds tiff_saver Adds plugin pre/post/process methods to base plugins Adds ptypy_batch Adds i13_ptycho_loader Adds monitor_correction_nd: extends monitor correction to allow more flexibility Updates TimeBasedCorrection: can now be applied to single entry darks and/or flats Updates Reconstructions: option to apply mask to data Adds option of cropping sinogram if centre needs shifting Updates DistortionCorrection: Updates to parameters to allow easier parameter tuning of centre values Automates shifting centre of distortion when data is previewed Updates DownsampleFilter: Updates to work with > 3D data Simplifies with scikit image Updates VoCentering: Uses different smooth filters for coarse and fine search to avoid local minima Updates MedianFilter: generalised for different data dimensionality Fixes MultiNxtomoLoader Re-organised plugins into collections All plugins now call process_frames() functio