Build errors

[usurniro]

From build.log:
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[ERROR] /home/florin/Crossbow/src/main/java/uk/ac/imperial/lsds/crossbow/kernel/Accuracy.java:[8,41] package uk.ac.imperial.lsds.crossbow.data does not exist
[ERROR] /home/florin/Crossbow/src/main/java/uk/ac/imperial/lsds/crossbow/kernel/Kernel.java:[6,41] package uk.ac.imperial.lsds.crossbow.data does not exist
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There is no "uk.ac.imperial.lsds.crossbow.data" folder in the git repo. Code is clearly missing.

[Alexandros Koliousis]

Missing files added.