Merge pull request #6 from jpraymond/master

Removed now useless proportion argument
Change to use pre-computed phones, phonemes and words sequences
Properly implement spaces for words, phones and phonemes
Merge branch 'master' of github.com:vdumoulin/research
Fix bug
Refine things a bit...
Fix TIMIT after Space bug has been fixed
Add TIMITSequences dataset
Add new spaces for RNNs and an RNN toy model
Add debugging section in rnn.py
Fix bug causing num_{phones,phonemes,words} to be inexact in some cases
Fix broadcasting bug in RNN toy model
Fix wrong attribute names preventing the right error message to be displayed
Update space/__init__.py to the latest version
Change 'window_dim' to 'dim' to respect the updated spaces
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Add reconstruction script for RNNs
Add experiment file
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Add use_ground_truth flag