v0.4.3

Adds

• [bedmethyl] Extract bigWig tracks from bedMethyl files
• [modbam] check-tags command to validate MM/ML tags
• Allow "generic" MM tags
• Add error-tabulation table to most commands

Fixes

• [sample-probs] Make colors the same in the output charts (fixes #345).
• [bedmethyl, merge] Perform an outer join as stated in the documenttion (fixes #334).
• [pileup] BAM-header ordering of contigs when using --include-bed