PEP8/pyflakes, simplifications.
'environ' keyword for preprocess.
PEP8 whitespace.
Finish deprecation of PYLEARN2_TRAIN_FILE_NAME.
Fix example with deprecated env var.
Unused import + old environment variable.
PEP8.
Be a bit more careful about os.environ keys.
Add environ argument to higher-level wrappers.
Fixed a little typo.
Merge pull request #513 from AlassaneNdiaye/remove_typos

Fixed a little typo.
added summarize_mlp
Merge pull request #507 from dwf/environ_argument

Argument to specify additional substitution variables to preprocess()
Minor doc. enhance to utils/environ.py
Fix variable name collision in utils.serial.load_train_file(..)
Merge pull request #516 from jbornschein/environ-fix

Fix utils.serial.load_train_file(...)
added explicit error message for MemoryError while running serial.load
rewrapped readme.txt to have lines of 80 chars or less
removed unused import
added author messages