Use `type` instead of `which` (#64)

fix: set NVM_HAS_RUN (#60)

fix for fish 3.2.0 (#54)

fixes minor bug on nvm_alias_command (#50)

Fix: osx PATH on sub shells (#44)

Fixes error swallowing when using .nvmrc (#42)

When a .nvmrc exists in the folder with a version that it's not
installed. fish-nvm swallows the error and says that command
(node,npm,npx,etc) is not installed.

fix: node repl issue starting on version 11.10.*

Fixes recursion (#33)

Update README.md

Fix: canonicalize readlink on nvm_alias_command function