Fix for MulticlassNaiveBayesTrainer export to Onnx (dotnet#4928)

* adding support for batch input dim

Add aka.ms aliases for files downloaded from Azure blobs (dotnet#4523)

* update tlcresources links

* Update more links

* update more links

* Undo changes in Samples project

Recreate workspace directory when fit() is called, fix documentation,…

… free up unmanaged memory. (dotnet#4438)

* Recreate workspace directory when fit() is called, fix documentation, free up unmanaged memory.

* PR feedback.

Image Classification API: Fix processing incomplete batch(<batchSize)…

…, images processed per epoch , enable EarlyStopping without Validation Set. Fixes dotnet#4274 and dotnet#4286     (dotnet#4289)

* In ImageClassification, process incomplete batch where number of samples < batchSize.

* fixed batchIndex not reseting in train loop, enabled EarlyStopping when validationSet is not given for ImageClassificationAPI

* fixed changing shape of feature and label tensor for incomplete batch,detected edge case where early stopping not supported.

* Improved featureBatchSizeInBytes calculation, improved exception message.

Adding basic support for handling vectors in the database loader. (do…

…tnet#4138)

* Adding basic support for handling vectors in the database loader.

* Updating the DatabaseLoaderTests to run against an actual database.

* Fixing a variable name to avoid a conflict

* Fixing the DatabaseLoaderTests.IrisSdcaMaximumEntropy test to look in the TestModel folder

* Adding back a type check, returning NaN as the default for float/double, and removing some dead code.

* Fixing up the DatabaseLoader tests to use the Iris TestDatabase

* Remove a call to pipeline.Preview

* Fix the name of loaderColumns1 to loaderColumns

* Fixing up doc comments and removing allocations from the database loader cursor.

* Responding to PR feedback and removing dead code.

* Mark the DatabaseLoaderTests as Windows specific for now.

* Fixing the context writer to not nullref for a null segment

* Ensure the Bindings segments is null if the count is zero.

* Fix tests to build on netfx, and to be skipped on non-Windows.

* Adding a connection timeout to give localdb a chance to initialize

Increment build version. (dotnet#4067)

* Increment build version.

* update version.

reformatted samples not in specific folder (dotnet#3949)

NativeAssemblyReference Include "MklProxyNative" in Samples project. (d…

…otnet#3819)

* Add Mkl redist package as dependency to time series package.

* PR feedback.

Adding the CommonPackage.props file to FastTree. (dotnet#3629)

The FastTree NuGet package is currently broken on .NET Framework when using packages.config because we are not copying the native files to the output folder.

Fix dotnet#3626

Fix IncludeBuildNumberInPackageVersion for official builds (dotnet#3181)

When doing an official build and setting a AzDO build variable, the variable turns into an environment variable. When MSBuild props/targets files declare a property, if they don't check if the property is already set, the MSBuild props file will override the environment variable. This causes the AzDO build variable to be ignored.

Adding a check if the IncludeBuildNumberInPackageVersion property is already set before setting it in Directory.Build.props.