* Drop target from types, drop prepare_for_caching, drop device from PyOpenCLTarget

* Add versioned numpy dep for post-pickle hash preservation

* Bump numpy compat floor to 1.19 for (assumed?) numpy#4317 fix

* Test add_padding_to_avoid_bank_conflicts in test_transpose

This reverts commit 0e9dd80f.

- adds outer inames to prefetches/precomputes to ensure all instructions
  are within all the hardware axes of the kernel.
- adds inames to instructions to ensure all instructions are within all
  the hardware axes of the kernel.

Allow lang version setting with LOOPY_KERNEL_LANGUAGE_VERSION global in make_kernel caller's global space

in doc and tests.

This reverts commit f8f65232.