Created Vintasoft.Twain.dll and Vintasoft.WpfTwain.dll assemblies for .NET Core 3.

API changes in Vintasoft.Twain.dll

New classes:

public class Vintasoft.Twain.KodakDeviceProfile	Contains information about Kodak device profile.
public class Vintasoft.Twain.KodakDeviceProfileCollection	A collection of Kodak device profiles.

Changed classes:

Vintasoft.Twain.DeviceManager
Added properties
	public System.ComponentModel.ISynchronizeInvoke ParentFormInvoker { get; }	Gets the parent form invoker of TWAIN device manager.
Added constructors
	public void DeviceManager(System.ComponentModel.ISynchronizeInvoke, System.IntPtr, Vintasoft.Twain.CountryCode, Vintasoft.Twain.LanguageType)	Initializes a new instance of the DeviceManager class.
	public void DeviceManager(System.ComponentModel.ISynchronizeInvoke, System.IntPtr)	Initializes a new instance of the DeviceManager class.

Vintasoft.Twain.DeviceInfo
Added properties
	public uint Id { get; }	Gets the device identifier in the system.

Vintasoft.Twain.AcquiredImage
Added properties
	public bool RetainDataCompression { get; set; }	Gets or sets a value indicating whether the image data compression must be retained after image processing by informative image processing command.

Changed enumerations:

Vintasoft.Twain.TwainDataArgumentType
Added fields
	public Vintasoft.Twain.TwainDataArgumentType Kodak_DatProfiles	Kodak_DatProfiles

API changes in Vintasoft.WpfTwain.dll

New classes:

public class Vintasoft.WpfTwain.KodakDeviceProfile	Contains information about Kodak device profile.
public class Vintasoft.WpfTwain.KodakDeviceProfileCollection	A collection of Kodak device profiles.

Changed classes:

Vintasoft.WpfTwain.DeviceInfo
Added properties
	public uint Id { get; }	Gets the device identifier in the system.

Vintasoft.WpfTwain.AcquiredImage
Added properties
	public bool RetainDataCompression { get; set; }	Gets or sets a value indicating whether the image data compression must be retained after image processing by informative image processing command.

Changed enumerations:

Vintasoft.WpfTwain.TwainDataArgumentType
Added fields
	public Vintasoft.WpfTwain.TwainDataArgumentType Kodak_DatProfiles	Kodak_DatProfiles