v0.2.0

This includes many bugfixes and changes, the main ones of which are:

• Support user specified Gabriel holdout patterns, not just 3x3
• Automated elbow point detection for bicrossvalidation
• Replaced patchworklib with Marsilea for plot_relative_weight
• Refactored bicrossvalidation shuffling to be a generator, to avoid all shuffles having to be held in memory for large inputs
• Fixed loading decompositions from gzip
• Added cophenetic correlation and dispersion as methods to select rank