Extracted distance functions into class.
Moved classes into appropriate packages.
Added cosinus metrics attirbute.
Upper case first letter of labels set.
Added some comments.
Add first stage of labels generation. Move code to notebook due to JVM issues.

Signed-off-by: Krzysztof Opasiak <ups100@tlen.pl>
Temporary version. Testing, looking for error

Signed-off-by: Krzysztof Opasiak <ups100@tlen.pl>
Fixed version of suffix Tree construction

Signed-off-by: Krzysztof Opasiak <ups100@tlen.pl>
Working wersion.

Only limited functionality, without any merging just labels from stc.

Signed-off-by: Krzysztof Opasiak <ups100@tlen.pl>