lmp 0.3 release
---------------
- fix memory allocation and freeing
  > 0.2.99.6: 55%
  > 0.2.99.8: 75%
- rename several functions and reorganize source files
  > 0.2.99.5: 50%
  > 0.2.99.7: 90%
  > 0.2.99.10: 92%
- fix error messages: finished
- full implementation of controls ("diff")
  > 0.2.99.6: 15%
  > 0.2.99.8: 55%
  > 0.2.99.9: 60%
  > 0.2.99.10: 68%
- full implementation of simplification
  > 0.2.99.6: 20%
  > 0.2.99.8: 22%
  > 0.2.99.9: 27%
  > 0.2.99.10: 28%
- 'rewrite' documentation
  > 0.2.99.6: 25%
  > 0.2.99.7: 30%
  > 0.2.99.8: 35%
- check compilation on different machines and OSes
  > 0.2.99.7: 10%
  > 0.2.99.8: 20%
  > 0.2.99.10: 40%
- LaTeX output
  > 0.2.99.10: 50%
- make ==, etc. controls instead of operators
  > 0.2.99.6:  0%

lmp future
----------
- MathML support, tex input parser
- graphical frontend (based on SDL and OpenGL resp.)
