update the stack example out
Merge pull request #1263 from heroku/fix-stack-command-help

update the stack example out
v3.15.3
updated year
fix(release): fixed bug with s3 uploading of folders
Merge pull request #1265 from heroku/release-fix

fix(release): fixed bug with s3 uploading of folders
fix(features): typos in features commands' usages
Merge pull request #1270 from gregclermont/fix-features-typos

Fix typos in features commands' usages
unhide http-git-flag
Merge pull request #1271 from heroku/unhide-http-git-flag

unhide http-git-flag
updating tweaks
do not block updates if starting updating more than 5 minutes ago
extend time between update checks to 24 hours
Merge pull request #1272 from heroku/update-tweak

updating tweaks
added build rake task
this is to be run before release so if there are any errors in building
the CLI, it will bail out before partially releasing to some targets
Merge pull request #1275 from heroku/build-task

added build rake task
added can_release step to release process
this ensures that the CLI is not released if the released version is the
current version (the dev didn't bump the version)
Merge pull request #1276 from heroku/can-release-check

added can_release step to release process
enhance release check by checking for release keys
Merge pull request #1277 from heroku/can-release-check

enhance release check by checking for release keys
use https git for foreman
Merge pull request #1278 from heroku/can-release-check

use https git for foreman