BART: version 0.4.01

Changes: new tools: casorati mandelbrot wavelet estshift estdelay ccapply cc tool: new option to output compression matrix traj tool: new option for gradient-error corrected radial trajectories pics tool: fix for the use of weights for non-Cartesian trajectories pics tool: fix for the use of weights with higher (temporal) dimensions (Jon Tamir) pics tool: allow the use of higher dimensions in sensitivity maps (Jon Tamir) nlinv tool: various fixes (Christian Holme) threshold tool: fix for hard thresholding (Jon Tamir) cmake: integration testing (Damien Nguyen) cmake: CUDA support (Damien Nguyen) fixes for a couple of memory leaks (Damien Nguyen, Christian Holme) faster system tests, more unit tests and system tests library: improved precision of wavelet filters library: new functions for tensor multiplication (md_ztenmul, ...) library: function to compute sensitivities with Biot-Savart law library: functions for polynoms library: improved and extended functions for splines many other bug fixes and improvement