New Stuff

• debug: Enhance nvm debug with more tools info (#1613)

Fixes

• install-latest-npm: io.js v1.0.x has weird behavior with npm v4.6.x.
• unset NVM_RC_VERSION when unloading (#1607)
• Preserve PATH locations order when changing versions (#1316)
• ensure all grep calls go through nvm_grep (#1615)

Documentation

• Update README.md for Alpine linux reference (#1606)

Tests

• retry io.js test runs, since iojs.org is flaky
• Remove the manual ShellCheck install proecss on Travis CI (#1619)