v1.0.9: Merge pull request #43 from ComparativeGenomicsToolkit/chop

hal2vg 1.0.9 is available in the following forms:

• Static Linux Binary: hal2vg (Don't forget to mark it executable: chmod +x hal2vg); also clip-vg, halRemoveDupes and halMergeChroms
• Source Tarball: hal2vg-v1.0.9.tar.gz
  Install instructions in README.md

WARNING: do not use the github automatically generated source files (Source code (zip) or Source code (tar.gz)), these are not correct.

Release notes

halMergeChroms binary added. It can be used to merge separate chromosome hal files, such as those produced by the Cactus Pangenome Pipeline, into a single file.