Prototypic implementation of string function
Fixed issue #424 "Results of string functions cannot be used as part of vectors"
Fixed issue #422 "If '\n' is used for replacing it is not converted correctly" Additionally, fixed a little issue with "break" and "continue", if they are trailed by a semicolon.
Fixed issue #421 "Issue with 'get' command"
Implemented part of ticket #404 "Updated samples and use cases"
Fixed issue #416 "Multiline headlines are not supported by 'stats'"
Fixed issue #417 "Cannot create a script in a subfolder"
Fixed an issue in implementation of #401
Fixed issue #415 "The 'cmp()' function cannot be used"