* Added a custom handler for XYZ files to cope with some of the variant formats.
* Supports files with no atom count on the first line
* Supports the variant used in the Minnesota Solubility database, which has 3 header
lines.
* Add capability to store properties into the database for formats such as MOPAC and
SDF that can handle properties. Also can output the properties when writing the
files.
* Fixed bugs if the system name or configuration name is not a string, but rather a number.