for example, create a project through the project package topthink/think
composer create-project topthink/think=5.0.* tp5  --prefer-dist if you use  composer update  only to update the package in the project,  composer show  can only view the version information of the dependent package, but not the project itself. 
so here comes the problem:
- how do I update the project instead of the package below?
- how do I view project information (version) instead of package information?
