New PR for adding KPCovC code

src/skmatter/decomposition/__init__.py

@@ -25,11 +25,25 @@
   original PCovR method, proposed in [Helfrecht2020]_.
 """
 
+from ._pcov import _BasePCov
+from ._kpcov import _BaseKPCov
+
+from ._pcovr import PCovR
 from ._kernel_pcovr import KernelPCovR
-from ._pcovr import (
-    PCovR,
-    pcovr_covariance,
-    pcovr_kernel,
-)
 
-__all__ = ["pcovr_covariance", "pcovr_kernel", "PCovR", "KernelPCovR"]
+from ._pcovc import PCovC
+from ._kernel_pcovc import KernelPCovC
+
+
+from ._pcov import pcovr_covariance, pcovr_kernel
+
+__all__ = [
+    "pcovr_covariance",
+    "pcovr_kernel",
+    "PCovR",
+    "KernelPCovR",
+    "PCovC",
+    "KernelPCovC",
+    "_BasePCov",
+    "_Base_KPCov"
+]