Merge pull request #13 from hubert667/Hubert1

Hubert1
Merge pull request #14 from hubert667/Hubert1

Hubert1
Merge pull request #15 from hubert667/Hubert1

main correction
Merge pull request #16 from hubert667/Hubert1

kmeans and classifier error fix
Merge pull request #17 from hubert667/Hubert1

Compare and main fix
Merge pull request #18 from hubert667/Hubert1

Hubert1
Distance between rankings (also update to main)
bug fix distance calculation
compare one query update
Merge remote-tracking branch 'origin/master' into Hubert1
Histogram update