Favor equality check over nil check
Pass a User-Agent when fetching data from the GitHub API

See <http://developer.github.com/v3/#user-agent-required>.

Signed-off-by: Jack Nagel <jacknagel@gmail.com>
Check GitHub API rate limit instead of silently failing

Signed-off-by: Jack Nagel <jacknagel@gmail.com>
Added support for a GitHub Personal API Access token

Signed-off-by: Jack Nagel <jacknagel@gmail.com>
Remove unnecessary rescue-all exception handling

Signed-off-by: Jack Nagel <jacknagel@gmail.com>
Hoist requires out of methods
Use implicit begin
Refactor Xcode/CLT version checks
gphoto2 2.5.2

Closes #19954.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
MacOS.version in case statement doesn't work with ranges
WordNet 3.1

Closes #19473.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
doctor: remove stale OS version check

Closes #19959.