- working on debugging multi-layer anns
- minor tidy-up of neural_network.scm
- added a new test target to src/neural_networks/Makefile
- training sets now reshuffle every epoch
- killed useless directory
- iris test currently working with multi-layer neural network
- updated PROJECT_LOG
- added src/neural_networks/t/heavy_testing/network_trainer.log to
  .gitignore
- commented out useless reverse-lists
- added a note to neural_network.scm
- updated PROJECT_LOG