add simple hi taxonomy for binary offline mode
add hi taxonomy for both binary and multi class, offline and online settings, add no. categories check
Merge branch 'feature/add_hi_taxonomy' into develop
add QuickSortIndex function
add simple es taxonomy
add full svm-es implementation, fixed some bug introduced by svm-es, modified some corresponding save/load/free model function
modified some instructions
Merge branch 'feature/equal_size_taxonomy' into develop
add support for SVM_KM for both online and offline settings
add cross validation framework for all algorithms
fix a bug that change some brier score to 0
Merge branch 'feature/add_cross_validation' into develop
fix some bugs, instructions and default value
Merge branch 'release/v1.3'