v0.2.0

Added

• Non-zero mean computation to fine-tuning notebook.
• Gene LFC loss for GenomeTracksHead.
• Align alternate predictions for splice junctions when making indel
  predictions.

Changed

• Fix splice-site and splice-site usage scoring to use the correct gene mask
  extractor.
• Only consider splice sites that are within a gene body, and overlaps with
  the provided variant.
• Pass requested outputs to the model prediction call, significantly reducing
  roofline memory consumption by eliding redundant computation.
• Pad gene masks in gene scoring. This reduces the number of jit
  recompilations for different numbers of genes.