Improve package

[hhaentze]

New behaviour:

• Images will be transformed to LPS by default. Can be deactivated with --is_LPS

New functions:

• lower memory requirements by splitting images --split_level <int>
• specify number of processes --nproc <int> & --nproc_export <int>
• specify how many images can be parallely loaded to system memory ---batchsize <int>