Implemented ticket #789 "Extend GUI system"
removed the direct calls to the seperate convolution functions and some code that will not be needed without the direct calls. relates to ticket #765.
added the version of the matrix filter that uses the fast fourier transformation for faster calculation for large kernel matrices as described in #765. for now all three methods exist side by side an can be selected by the user.
Implemented ticket #788 "Main window can not be opened while having plots in full screen"
Implemented ticket #785 "Add candlestick and OHLC plotting styles"
Improved implementation of #667 and resolved a bug in pasting into the terminal
Implemented ticket #667 Highlights duplicate items in the DependencyViewer
Improved implementation of #756 Added a denominator to the covariance method
Fixed a critical issue in the loading process of XLSX files
Fixed issue #770 "Problem with function definitions in procedures"