- `enum_type_axis` simplifies using integral_constants with type axes.
- `examples/enums.cu` demonstrates various ways of implementing parameter
sweeps with enum types.
- New NVBench_ENABLE_EXAMPLES CMake option.
- examples/axis.cu provides examples of parameter sweeps.
- Moves testing/sleep_kernel.cuh -> nvbench/test_kernels.cuh
- Accessible to examples and provides some built-in kernels for users
to experiement with.
- Not included with `<nvbench/nvbench.cuh>`.