new Variant type for configuration values
fixed Windows bug and ran win32 tests
move config to use Variant
configuration api optimization
moved all roadrunner instance vars to private impl
ran 64 bit Linux tests
fixed cvode memory leak, moved all RoadRunner ivars to private struct, removed useless bool return values, fixed memory leaks with metabolic analysis matricies
ran Linux 64 tests
bumped version info
fixed memory leak
Merge branch 'variant' of github.com:AndySomogyi/roadrunner into variant
updated NEWS to reflect changes in current release including documentation updates
fixed spelling mistakes in NEWS.txt
mark deprecated methods
clean up msvc compiler warnings
added new variableStep option enable variable time stepping