- [x] add `concretize.lp`, `spack.yaml`, etc. to licensed files
- [x] update all licensed files to say 2013-2021 using
`spack license update-copyright-year`
- [x] appease mypy with some additions to package.py that needed
for oneapi.py
- 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
* Rename packages
* Upcasing depends_on() in packages.
* Downcased extends('r')
* Fixed erroneously changed URL that had slipped through.
* Fixed typo
* Fixed link from documentation into package source code.
* Fixed another doc problem.
* Changed underscores to dashes in package names.
* Added test to enforce lowercase, no-underscore naming convention.
* Fix r-xgboost
* Downcase more instances of 'R' in package auto-creation.
* Fix test.
* Converted unit test packages to use dashes not underscores
* Downcase `r` in the docs.
* Update module_file_support.rst
Fix r->R for class R.
