A plugin manager for PocketMine-MP. It installs and uninstalls plugins, among other things.
install <plugin> [version]
Installs a plugin
Uninstalls a plugin
Updates a plugin.
Fetches info about a plugin from Poggit
Sheep provides a flexible API to plugins wishing to add or interface with defined Sources (default: Poggit.) It employs a modern Promise-based framework for asynchronous operation. Further information may be found in the Sheep API class.
Sheep takes the security of your server very seriously. It only allows the execution of commands from the PocketMine console, therefore eliminating the possibility of unwanted plugin installation from a compromised operator account.
If you're talking about replacing Sheep-installed plugins with a locally modified version, that isn't strictly supported. What you can do, however, is uninstall the plugin through Sheep (which removes it from the lock), then move your modified phar back to the plugins folder. That should silence Sheep Updater.