PMathGen 0.1.0

PMathGen project is a simple math problem generator that outputs LaTeX and optionally PostScript.
From the operators, format, etc. specified on the command line or in a worksheet description file, it generates LaTeX and optionally PostScript files that can be used as math worksheets.
Enhancements:
- A file format, so lessons can have titles, and sections, and instructions, and can be saved and recreated randomly again.
- More fine grained control over minimum and maximum numbers in problems.
- Cleaner LaTeX code that is easier to modify either within the PMathGen file format or after it is generated.
- Better documentation, including the file format and customization instructions.