Merge pull request #1 from iglesias/develop

update HMSVMLabels to SequenceLabels and set correct toy default data
Subgradient and stochastic subgradient learning algorithms.
WIP: The results do not look good yet.
Merge pull request #2 from iglesias/subgradients

Subgradient and stochastic subgradient learning algorithms.
Remove wrong comment in SubgradientSOSVM.
Few changes in subgradients.
- Added ctrl+c handling.
- Accuracy debug within the loop.
- Parameter tuning (WIP, still no good results)
Merge pull request #3 from iglesias/subgradients

Few changes in subgradients.
Fix in subradient descent methods. Results for the toy example are fine now.
Add Gaussian smooth pattern generation