Fixed issue #372 "Ensure that the last line of the history is visible at start-up"
Fixed an issue in implementation of #367 A copy-paste error occured, which made the code not compilable
Fixed issue #367 "Dollar signs in strings as procedure arguments"
Fixed issue #369 "Cannot apply a vector componentwise to a matrix"
Added a fix to implementation of ticket #364 The "cnt()" function was not working properly
Fixed issue #341 "Table headlines cannot be combined using 'sum()'"
Implemented ticket #370 "Enable legends for bar charts"
Speed up the implementation of ticket #356 Used "sprintf()" instead of "stringstream", which is four times as fast.
Refactoring based upon tickets #287, #288
Fixed issue #362 "Issues with source-code like string contents"