Cargo-license 0.4.0 released

I became a collaborator of cargo-license, and released v0.4.0.
In this version, some UI improvements are contained.

  • cargo license like other cargo subcommand becomes acceptable. ( in the previous version, only cargo-license was acceptable. )
  • Automatically output coloring by TTY detection. Now if the output is piped or redirected, coloring becomes disabled. The behavior can be changed through --color option as the same as cargo command.