Batch Calculator v0.2.0

New features:

New internal methods for adding/editing/deleting database entries (no external software required anymore!).
Option to create an new database from scratch.
New option to generate pdf reports directly (TeX is still an option but if you don't like it now there is an alternative).
pdf reports can be generated not only from batch calculation (moles to masses) but also from the composition calculation (masses to moles).
Program can now handle chemicals that are multicomponent mixtures.

Volumes are now included next to masses in the results panel (for chemicals that are liquids and have their densities in the database).
Additional scaling of the results is now possible.
Several annoying bugs were corrected.