CUTLASS 2.6.1 - functional and performance enhancements to strided DGRAD, fixes, and tuning

* cutlass 2.6 update

* remove debug prints

* cutlass 2.6.1 (minor update)

* Updated CHANGELOG.

* Minor edit to readme to indicate patch version.

* Minor edit to readme.

Co-authored-by:  Haicheng Wu <haichengw@nvidia.com>, Andrew Kerr <akerr@nvidia.com>

tools/library/scripts/manifest.py

@@ -20,7 +20,6 @@ class EmitOperationKindLibrary:
     self.generated_path = generated_path
     self.kind = kind
     self.args = args
-
     self.emitters = {
       OperationKind.Gemm: EmitGemmConfigurationLibrary
       , OperationKind.Conv2d: EmitConv2dConfigurationLibrary  
@@ -347,7 +346,7 @@ class Manifest:
 
     with interface_emitters[target](generated_path, self.operation_count, self.args) as iface_emitter:
       for operation_kind, configurations in self.operations.items():
-          iface_emitter.emit(OperationKindNames[operation_kind])
+        iface_emitter.emit(OperationKindNames[operation_kind])
 
       source_files += iface_emitter.source_files