Named Parameters, New Tumble Probability, Dynamic Frame Time

Command-line parameters are all named now for better extensibility later on in implementing more command-line parameters.

Corrected tumble probability calculations; new one using overall concentration gradient change rate over time according to literature.

Implemented optional dynamic frame time feature for simulation updating

Recommended run configuration (6 food sources, 5 bacteria) (if you want to avoid the random defaults):

1. If you have Scala installed:

scala ./chemotaxis.jar fs=6 bs=5

2. If you don't have Scala installed (the JAR's 5MB+ in size because it bundles Scala (it's a UberJAR)):

java -jar ./chemotaxis.jar fs=6 bs=5

This assumes that the downloaded release JAR is in the current directory and the scala executable is on your path.

First Release

This is the first release after the project was migrated to SBT. Fully functional except for as-yet unimplemented session save/restore and useful user interactivity with displayed elements.

Recommended run configuration (if you want to avoid the random defaults):

scala ./chemotaxis.jar 6 5 (6 food sources, 5 bacteria)

This assumes that the downloaded release JAR is in the current directory and the scala executable is on your path.