Change Lightning to inherit from QubitDevice instead of DefaultQubit (#…

…365)

* Change Lightning to inherit from QubitDevice

* update python tests

* expand cmake hints for Kokkos search

* NotImplementedError for SparseHamiltonian expval in the absence of Kokkos

* update changelog

* update apply method to rely on apply_lightning for rotations

* update tests and conftest

* Update pennylane_lightning/lightning_qubit.py

* add black to requirements-dev

* update adjoint jacobian tests

* add stopping condition and tests

* without binary skip decomposition test

.github/CHANGELOG.md

@@ -24,6 +24,8 @@
 * Update gcc and g++ 10.x to 11.x in CI tests. This update brings improved support for newer C++ features.
 [(#370)](https://github.com/PennyLaneAI/pennylane-lightning/pull/370)
 
+* Change Lightning to inherit from QubitDevice instead of DefaultQubit.
+[(#365)](https://github.com/PennyLaneAI/pennylane-lightning/pull/365)
 
 ### Documentation
 

cmake/process_options.cmake

@@ -123,6 +123,7 @@ if(ENABLE_KOKKOS)
             /usr
             /usr/local
             /opt
+            /opt/Kokkos
     )
     if(Kokkos_FOUND)
         message(STATUS "Found existing Kokkos library")
@@ -134,6 +135,7 @@ if(ENABLE_KOKKOS)
             /usr
             /usr/local
             /opt
+            /opt/KokkosKernels
     )
     if(KokkosKernels_FOUND)
         message(STATUS "Found existing Kokkos Kernels library")

pennylane_lightning/_version.py

@@ -16,4 +16,4 @@
    Version number (major.minor.patch[-label])
 """
 
-__version__ = "0.27.0-dev11"
+__version__ = "0.27.0-dev12"