* Eagerly request courses in background on login.
* Tab-complete `wopen` command.
* Tab-complete the `-c` (`--course`) option for course-optional commands.
* Output directory (`-o`) option available to the `pullf` command.
* Assignment group grades and overall class grades shown in the `lg` command.
* Grades now colored based on score in the `lg` command.
* Quiet (`-q`) option available to the `login` command.