* SI_Units v0.2.0
* Update si_units-0.2.0.toml
Fixed wording.
* Update si_units-0.2.0.toml
- Removed `executables` (tests and examples are not supposed to be there)
- Removed project file for building the test executable from `project-files`.
Also applied the rest of transformations described in alire#227: no top-level
[genera] table, name/version keys, [[depends-on]] array instead of table.