Fbpic

This is a bug-fix release. It fixes an issue when using GPU Direct with
`mpi4py` version 4 and above (See [565](https://github.com/fbpic/fbpic/pull/565)).

In addition, the internal implementation of the laser profiles has been
refactored. (See [560](https://github.com/fbpic/fbpic/pull/560),
[561](https://github.com/fbpic/fbpic/pull/561), [#562](https://github.com/fbpic/fbpic/pull/562)). However, the user interface is unchanged.

This is a bug-fix release. It improves FBPIC's compatibility with recent
versions of some of the software dependencies (namely `numba` and `mkl`).

- The latest version of `numba` (`numba 0.53.`) raised numerous warnings
when running previous versions of FBPIC on GPU. These warnings do not appear
anymore with this new release. (See [538](https://github.com/fbpic/fbpic/pull/538))

- FBPIC can use the MKL distribution from `conda`, but was unable to use
the MKL distribution from `pip`. This is now fixed.
(See [537](https://github.com/fbpic/fbpic/pull/537))

This is a bug-fix release. It allows FBPIC to run with the latest
`cupy` version (`cupy 9.0.0`) on GPU
(see [532](https://github.com/fbpic/fbpic/pull/532)).

This is a bug-fix release. It fixes errors that in detecting the GPU UUID on
some plateforms (see [529](https://github.com/fbpic/fbpic/pull/529)).

This release introduces several improvements and bug fixes.

Better handling of multiple GPUs on clusters:
- The attribution of individual GPUs to the different MPI ranks is more robust,
and avoids oversubscribing certain GPUs while leaving others idle (see
[523](https://github.com/fbpic/fbpic/issues/523)).
In addition, GPU oversubscription is now automatically detected, and
a corresponding error message is printed. (see [524](https://github.com/fbpic/fbpic/issues/524))
- Out-of-memory error are handled more properly, and will abort multi-GPU
simulations whenever they are encountered by one of the GPUs. (see
[521](https://github.com/fbpic/fbpic/issues/521))
- The hostname is now printed even for single-rank simulation. (see
[495](https://github.com/fbpic/fbpic/issues/495))
- Kernel launch parameters have been fine-tuned for A100 architecture. (see
[525](https://github.com/fbpic/fbpic/issues/525))

Bug fixes:
- The external fields used to be applied to all species, instead of the
species specified by the user. This is now fixed. (see
[498](https://github.com/fbpic/fbpic/issues/498))
- The installation instructions were updated. (see
[515](https://github.com/fbpic/fbpic/issues/515))

New features:
- Added a `Mirror` class to block the propagation of the laser e.g. in
multi-stage simuations. (see [507](https://github.com/fbpic/fbpic/issues/507))

This release incorporates a small fix that allows the code to compile with
Python 3.8. (see [488](https://github.com/fbpic/fbpic/issues/488))