Implemented ticket #517 "Add 'getkeyval()' function"
Fixed an issue in implementation of ticket #515 "polynomial()" was used erronously as multi-argument function
Fixed issue #519 "Crash during saving"
Fixed issue #515 "Expressions like 'and(data(:, 1) == data(:, 2))' are not resolved correctly"
Implemented ticket #509 "Add the possibility to remove keywords from index"
Fixed issue #514 "Errors in 'matop'"
Implemented part of ticket #509 Cleaned the code of doc_helper.cpp
Implemented ticket #508 "'DoxyGen'-like documentation generator for procedures"
Fixed issue #512 "Control flow blocks in install sections are sometimes folded wrong" Additionally updated the year in the copyright statement in the splash image.
Fixed issue #513 "Installing procedures messes up comments"