upgrade dependencies
- upgrade got from 8.3.2 to 9.0.0
- upgrade fs-extra from 6.0.1 to 7.0.0
- upgrade commander from 2.16.0 to 2.17.0
- trim extra trailing newline from commander's help information
- update nodegit from 0.22.1 to 0.22.2
- upgrade convict from 4.3.1 to 4.3.2
- upgrade eslint from 5.1.0 to 5.3.0
Edited by Dan Allen