bart: version 0.4.04

Changes: new tools: index poly wshfl zexp index: generate indices poly: generate polynomial patterns (Siddharth Iyer) wshfl: wave-shuffling (Siddharth Iyer) zexp: replace zexpj with zexp for complex exponentials pics: support for temporal basis pics: overlapping blocks option for LLR (Jon Tamir) pics: make basis pursuit possible for noncartesian data pics: non-negative constraint (Jon Tamir) nlinv: introduce option for sms ecalib: fix bug in phase rotation ecalib: add debug_level argument estdelay: RING method (Sebastian Rosenzweig) traj: Half circle golden-ratio sampling (Sebastian Rosenzweig) traj: Option for asymmetric trajectories (Sebastian Rosenzweig) bench: add option to select benchmarks using bitmask phantom: add geometric object phantom (Sebastian Rosenzweig) phantom: fix inconsistency between img-phantom and k-phantom for rectangles (Sebastian Rosenzweig) copy: enhance copy command to do simple copies toimg: windowing and option to re-scale images to full dynamic range (Jon Tamir) generic: many new integration and unit tests generic: improved WSL support (Soumick Chatterjee) generic: add mkl support (Jon Tamir) generic: bart as a library (Damien Nguyen) generic: CMake improvements (Damien Nguyen) generic: Save FFTW wisdom when TOOLBOX path is set (Siddharth Iyer) generic: fixes for memory leaks library: optimized strided copy on GPU (Simon Yeung) library: parallelization to fftmod library: nufft: efficient use with temporal basis library: nufft: fix issue with over-sized trajectories library: add runga-kutta ode solver library: iter/italgos: alternating minimization (Christian Holme) library: irgnm: add minimum for alpha as parameter (Christian Holme) library: step size support in chambolle-pock library: add tenmul operator library: add md_zexp library: add zexp nonlinear operator library: add linop_null and linop_plus library: add md_zsum: (Complex) sum along specified dimensions (Sebastian Rosenzweig) library: fix bug in septrafo (broke cdf97 wavelets) many other bug fixes and improvement