% wsjcpp i "https://github.com/wsjcpp/wsjcpp-yaml:master" 
2020-04-21 06:57:55.930, 0x0x10e90edc0 [INFO] ArgumentProcessorInstall: Try installing source package 'https://github.com/wsjcpp/wsjcpp-yaml:master' ...
2020-04-21 06:57:55.930, 0x0x10e90edc0 [ERR] WsjcppPackageManager: Package 'https://github.com/wsjcpp/wsjcpp-yaml:master' already installed
2020-04-21 06:57:55.932, 0x0x10e90edc0 [ERR] ArgumentProcessorInstall: Could not install 'https://github.com/wsjcpp/wsjcpp-yaml:master' package.
Try exec 'wsjcpp help' for more information

Source package: https://github.com/wsjcpp/wsjcpp-yaml:master'
Package name: wsjcpp-yaml
Already installed.

For upgrade try command:
   
   wsjcpp reinstall wsjcpp-yaml

For remove this package:

  wsjcpp uninstall "https://github.com/wsjcpp/wsjcpp-yaml:master"

Try exec 'wsjcpp help' for more information