v0.7.0

Changes:

• Backend was moved to Tensorflow
• Pickle storage for the weights has been replaced with HDF5
• Changed order of the dimensions for the convolutional filter (channel expected to be in the last dimension)
• The compile method was removed
• Added wolfe search to conjugate gradient
• Fixes for the training algorithms

Removed:

• Linear models
• Quickprop training algorithm
• Ensemble algorithms