git-stats --authors fails with redirected output

[vogler]

Context:

• Not working on Windows Git Bash #151 (comment)
• work with redirected output? jonschlinkert/window-size#17

Works: ROWS=50 COLUMNS=140 git-stats -g
Fails:

$ ROWS=50 COLUMNS=140 git-stats --authors
/usr/local/lib/node_modules/git-stats/node_modules/cli-graph/lib/index.js:63
    self.graph[settings.center.y][settings.center.x] = settings.marks.center;
                                                     ^

TypeError: Cannot set properties of undefined (setting 'NaN')
    at new CliGraph (/usr/local/lib/node_modules/git-stats/node_modules/cli-graph/lib/index.js:63:54)
    at new CliCircle (/usr/local/lib/node_modules/git-stats/node_modules/cli-circle/lib/index.js:35:18)
    at CliPie.toString (/usr/local/lib/node_modules/git-stats/node_modules/cli-pie/lib/index.js:170:18)
    at /usr/local/lib/node_modules/git-stats/lib/index.js:633:95
    at /usr/local/lib/node_modules/git-stats/lib/index.js:565:17
    at LimitIt.<anonymous> (/usr/local/lib/node_modules/git-stats/node_modules/gry/lib/index.js:80:17)
    at /usr/local/lib/node_modules/git-stats/node_modules/limit-it/lib/index.js:138:20
    at ChildProcess.<anonymous> (/usr/local/lib/node_modules/git-stats/node_modules/exec-limiter/lib/index.js:119:13)
    at ChildProcess.emit (node:events:514:28)
    at maybeClose (node:internal/child_process:1105:16)