Removing a tag from a repo that doesn't have the tag removes the tag from another random repo

[n1ywb]

I start out with 3 repos with the @premajor tag, and I am in one of them

When I remove the tag from the current repo, it works as expected

when I try to remove the tag AGAIN from the current repo (which no longer has the tag) it removes the tag from a different repo which completely borks up my git run tags

also gr crashes with an ugly message when you ask for the status of a tag with zero repos

(rp_bower) jeff@ta00491-Jeff ~/readingplus/rp_bower/emerson-report-client $ gr @premajor status
~/readingplus/rp_bower/app-datepicker         master         Clean        [ahead 2]    @rp @con @rp_bower @premajor
~/readingplus/rp_bower/emerson-report-client  master         Clean                     @rp_bower @premajor
~/readingplus/rp_bower/emerson-settings       master         Clean                     @rp @con @rp_bower @premajor
(rp_bower) jeff@ta00491-Jeff ~/readingplus/rp_bower/emerson-report-client $ gr tag rm premajor
gr-tag info remove tags.premajor /home/jeff/readingplus/rp_bower/emerson-report-client => [ '/home/jeff/readingplus/rp_bower/emerson-settings',
  '/home/jeff/readingplus/rp_bower/app-datepicker' ]
(rp_bower) jeff@ta00491-Jeff ~/readingplus/rp_bower/emerson-report-client $ gr @premajor status
~/readingplus/rp_bower/app-datepicker    master         Clean        [ahead 2]    @rp @con @rp_bower @premajor
~/readingplus/rp_bower/emerson-settings  master         Clean                     @rp @con @rp_bower @premajor
(rp_bower) jeff@ta00491-Jeff ~/readingplus/rp_bower/emerson-report-client $ gr tag rm premajor
gr-tag info remove tags.premajor /home/jeff/readingplus/rp_bower/emerson-report-client => [ '/home/jeff/readingplus/rp_bower/emerson-settings' ]
(rp_bower) jeff@ta00491-Jeff ~/readingplus/rp_bower/emerson-report-client $ gr @premajor status
~/readingplus/rp_bower/emerson-settings  master         Clean                     @rp @con @rp_bower @premajor
(rp_bower) jeff@ta00491-Jeff ~/readingplus/rp_bower/emerson-report-client $ gr tag rm premajor
gr-tag info remove tags.premajor /home/jeff/readingplus/rp_bower/emerson-report-client => []
(rp_bower) jeff@ta00491-Jeff ~/readingplus/rp_bower/emerson-report-client $ gr @premajor status
/home/jeff/readingplus/gr/lib/command-requirements.js:8
    if (gitCommand.stderr.toString().replace(/(\r\n|\n|\r)/gm, '').trim()) {
                          ^

TypeError: Cannot read property 'toString' of null
    at Object.git (/home/jeff/readingplus/gr/lib/command-requirements.js:8:27)
    at Object.module.exports [as handle] (/home/jeff/readingplus/gr/plugins/status.js:27:28)
    at next (/home/jeff/readingplus/gr/index.js:244:11)
    at next (/home/jeff/readingplus/gr/index.js:227:14)
    at next (/home/jeff/readingplus/gr/index.js:227:14)
    at next (/home/jeff/readingplus/gr/index.js:227:14)
    at next (/home/jeff/readingplus/gr/index.js:227:14)
    at next (/home/jeff/readingplus/gr/index.js:227:14)
    at next (/home/jeff/readingplus/gr/index.js:227:14)
    at next (/home/jeff/readingplus/gr/index.js:227:14)