bump version
Merge branch 'release/0.0.5' into develop
Add a macro _GLIBCXX_DEBUG on debug mode to enable libstdc++ debug mode.
Merge pull request #73 from gwtnb/libstdc++-debug

Add a macro _GLIBCXX_DEBUG on debug mode to enable libstdc++ debug mode.
Add bandit epsilon-greedy algorithm
Add driver::bandit (minimal)
Implement pack/unpack
Implement driver/bandit
Add test for bandit
Add ucb1 algorithm
Add softmax algorithm
Split select_by_weights
Redesign bandit to implement exp3