New Stuff
 - `nvm debug`: Print $SHLVL, add $PATH (#1655, #1745)

Fixes
 - `install.sh`: detect a defined but nonexistent $NVM_DIR (#1700)
 - `install.sh`: Don't give detached HEAD advice when installing (#1704)
 - Add missing "command" prefixes for few commands (#1735, #1725, #1736)
 - Use `nvm_echo` instead of `echo` directly (#1751)
 - `reinstall-packages`: Prevent install/link when no packages found (#1750)
 - ensure --reinstall-packages-from has a version number (#1760)
 - `bash_completion`: Reduce startup time (#1759)
 - installing with an LTS name should lowercase the name before ensuring a default (#1781)
 - Add autocompletion support to zsh (#1707)
 - `install.sh`: Detect profile with $BASH_VERSION and $ZSH_VERSION (#1780)
 - Turn off wget's output in nvm_get_latest (#1785)
 - `nvm debug`: Improve OS version detection (#1746)

Refactors
 - Various style and shellcheck fixes (#1684, #1724, #1747, #1748)
 - Optimize ShellCheck installation in Docker image (#1729)
 - Remove duplicate code in nvm_npm_global_modules() (#1742)
 - Use grep `-q` parameter instead of redirect to /dev/null (#1741)
 - `install.sh`: Improve install.sh prompt output, add a newline (#1783)

Docs
 - Explain `.nvmrc` better (#1673)
 - Update minimum git version to v1.17.10
 - Add escape sequences (#1701)
 - add `nvm which current` to `nvm --help` output
 - avoid need for future copyright year updates (#1713)
 - Add reminder that NVM_DIR should not contain trailing slash (#1726, #1708)
 - Display FreeBSD and SunOS with correct caps (#1728)
 - Update Docker image build info in README.md (#1733)
 - Various typo fixes (#1756, #1753)
 - removed global install on README.md (#1775, #1773)
 - Add removal instructions to README.md (#1777, #1767)
 - Fix manual install & upgrade guide (#1786, #1772)
 - Add macOS install script note about git (#1787, #1782)

Tests
 - add test for aliased `.` (#1701)
 - fix mirrors in mocks update script, update mocks
 - Add EditorConfig to help maintain part of coding style (#1739)