[UPDATE] PackageId more restrictive when retrieving a package.
It avoids retrieving more than one package at creation (New-Package) when the name of the package already exists
[UPDATE] More restrictive condition on collections retrieval. If not, it is not possible to create new collection. It always said "Invalid parent collection".
Merge pull request #3 from masantiago/master

[UPDATE] PackageId more restrictive when retrieving a package.