Check current version is up to date

[jessjenkins]

Check that the current version is up to date by comparing with the latest release on Github.
Possibly using https://api.github.com/repos/ONSdigital/dp-cli/releases/latest which does not need authentication but will only work when there is at lease one full release (ie. not Pre-Release).

Check should definitely be done on dp version but might also be worthwhile doing at any other time too?

[morses-code]

Hi Jess, I've created a brew forumla/tap that will help make sure we are running latest version of dp-cli

Set up the tap

$ brew tap ONSdigital/homebrew-dp-cli git@github.com:ONSdigital/homebrew-dp-cli

Brew install dp-cli

$ brew install dp-cli

I want to test what happens when we have a new release to check this all works correctly, but this should hopefully make things easier.

• Easier to install
• Easier to track versions

Downside

• Need to keep the forumla updated when creating releases (https://github.com/ONSdigital/homebrew-dp-cli)