massXpert mass spectrometry package 1.6.5

massXpert mass spectrometry package is a mass spectrometry environment for linear (bio-) polymers. It inherits all the innovations of GNU polyxmass, as it is a port of that project to a cross-platform development environment.
Enhancements:
- A feature was added whereby, upon definition of a monomer chemical modification, the user might tell which monomers are targets of that modification.
- If the user tries to modify a monomer with a modification that cannot be used for that, she is alerted.
- A mechanism overriding the modification target limitations is available for maximum flexibility.
- Bugs related to the chemical modification of polymer sequences were fixed.
- The user manual was updated to document the new features.