Unmet energy threshold for backup diesel

For diesel backup generators which meet unmet demand, previous configurations allowed for diesel generators that reduced system blackout times. In reality, unmet_energy is a more useful feature when modelling CLOVER. This has been introduced with the keyword backup_unmet in the diesel scenario file and will be reflected in an update to the wiki.

What's Changed

• Update CITATION.cff by @BenWinchester in #109
• Add .zenodo.json by @BenWinchester in #115
• 116 unmet diesel by @hamishbeath in #118
• Remove related identifiers by @BenWinchester in #121

New Contributors

• @hamishbeath made their first contribution in #118

Full Changelog: v5.0.4...v5.0.5