Changes from Version 1.4 to 1.5 
* overhauled graphical user interface and report.

Changes from Version 1.3 to 1.4 
* changed the reduced alphabet of amino acids,
* improved prediction model,
* enhanced output of signalHsmm print and summary functions,
* enhanced graphical user interface.

Changes from Version 1.2.1 to 1.3 
* improved read_uniprot to check features other than signal peptide and look for specific phrases in protein description.

Changes from Version 1.2 to 1.2.1 
* fixed systematic error in a cleavage site prediction.