Resolve "Persist and set default node version in path"

Closes #15

See merge request !16

Resolve "Check for newer version of index.tab on node.js/dist"

Closes #24

See merge request !15

 - [x] check file exists first
 - [x] check modification time of file

Resolve "Pay down tech debt from conversion to Semver"

Closes #23

See merge request !14

Resolve "Full semver support"

Closes #20

See merge request !13

Add installer script

Closes #17

See merge request !12

Bug/fix code coverage reporting

Closes #19

See merge request !11

(bug) Prevent PATH from being erased for nonzero rn exit codes

See merge request !10

Previously, because I was running rn inside a pipe, and I didn't have pipefail enabled in the shell, the exit code would become 0 even though the rn binary itself was returning 1. The fix is to add pipefail AND a regression test.

Provide Mac (and Linux) binaries

See merge request !7

Since I'm committed to using Gitlab.com, this is kind of my only option
😭. TravisCI would be an excellent choice for generating mac builds,
but it doesn't integrate with Gitlab. Thus, though it hurts me, I'm
checking in a binary for MacOS that works for me (tm).

Strip out text echoed by libraries :-( I can't figure out why this is
happening, but I'm fairly positive its in one of the libraries I'm
using.

libflate didn't unpack the node binary correctly, didn't set symlinks up, and didn't set permissions correctly either.

Silly NodeJS.org -- MacOS binaries are distributed as tar.gz and Linux binaries as tar.xy. Soooo, I need separate decompression libraries for the different platforms. Grr

Resolve "Sets Node Version in Session Path"

Closes #2

See merge request !6