Iga

Changes in this release:

* Fix issue 21: the copyright year put in the metadata `dates` field can could up being a completely bogus value in some cases.

Changes in this release:

* Fix issue 8: org parsing some results in error.

This is the first full release of IGA, the _InvenioRDM GitHub Archiver_. This release supports the use of IGA as both a command-line program and as a GitHub Action. Complete documentation is available at <https://caltechlibrary.github.io/iga/> and a shortened version of the documentation is present in the [repository README file](https://github.com/caltechlibrary/iga).

Changes in this release:

* Fixed another problem with logging, in part by reverting a previous change but also by modifying the code that writes error messages.
* Expanded the error catches in the GitHub Action workflow to detect and report problems with invalid tokens.
* Merge PR 7: doc improvements.

Changes in this version:

* IGA now tests the InvenioRDM token explicitly and returns a new exit code if the token is rejected. This makes it possible for the GitHub Action to report this situation more clearly.

Changes in this release:

* Fixed bug where setting `verbose` mode or higher caused output to go to the terminal and was not properly sent to the log destination.