About the library of OfficeDevPnP.Core

[Mas9610]

[Background]
(Currently, We use ) the library of CSOM for the authentication to SharePoint Online, and for making/using the access application (C#).
We are going to modify this application, by using PnP SiteCoreLibrary, for authentication of AzureAD application (Service principal).

In this case, we will use OfficeDevPnP.Core.dll.
We suppose that the current library version is not available for it.
So that the following changing is necessary.
If it could work without the changing, it is no need to do the following modifications.

[Question]
Would you please tell us that OfficeDevPnP.Core library is available for the current CSOM library and .NET Framework version or not?

[The current development environment]
Visual Studio： Visual Studio 2012
.Net Framework： .Net Freamwork 4.5
CSOM（Microsoft.SharePoint.Client）： 16.1.4915.1200

[The replacement contents of the library]
It is necessary to change the referenced *.Net Framework version for the current application modules.
Because the .Net Framework version will be higher than .NetFramework 4.6.1.