Fixed issue in implementation of #392 Rev. r140
Fixed issue in implementation of #365
Fixed issue in implementation of #369
Implemented ticket #393 "Implement a 'sleep()' function"
Fixed issue #392 "Drag & Drop into the first editor tab is not possible" Addtionally, cleaned the main event table
Implemented ticket #391 "Add 'getenvvar()' function to the string parser"
Implemented ticket #365 "Improve procedure library"
Implemented ticket #389 "Rework complex return values in 'matop' mode"
Implemented ticket #388 "Rename/remove commands"
Fixed issue #390 "Still encoding issues"