We'd like to use a consistent checksum scheme everywhere so that we can:
a) incorporate archive checksums into our specs and have a
consistent hashing algorithm across all specs.
b) index mirrors with a consistent type of checksum, and not one that
is dependent on how spack packages are written.
- [x] convert existing md5, sha224, sha512, sha1 checksums to sha256
- remove the old LGPL license headers from all files in Spack
- add SPDX headers to all files
- core and most packages are (Apache-2.0 OR MIT)
- a very small number of remaining packages are LGPL-2.1-only
* Added a package for the MDAnalysis toolkit.
* Added the hash for the 1.0 release of caffe and put in a conflict
statemet indicating that protobuf requires a c++11 compiler.
* Changed minimum version number.
* Tweaked the minimum version number.
* Fixed flake8 error.
