Version 0.2.0

• feat: support whole-chromosome or chrom:start-only merging (this is very slow for now since it loads the whole bigWig into memory)
• feat: allow negative numbers in window start/range
• chore: raise an error if range min >= range max
• docs: specify min python ver + document range option
• test: some merge helper functions
• test: compute html coverage files in local test scripts
• ci: set up codecov

Full Changelog: v0.1.0...v0.2.0

Version 0.1.0

Initial release with average-merging and rough bigWigMergePlus output backwards-compatibility.