V0.42.3

Changes from v0.42.2.1

• We now use a conditional mean for effective length estimation (rather than the overall mean) based on the frag length distribution
• Add 'aux/num_processed' to H5
• Add GFA file option to 'inspect'
• Incorporate truncated gaussian in single-end datasets instead of only mean

It is recommended that users upgrade to this release for compatibility with sleuth