PowerGenome/PowerGenome: v0.5.4

This version bump adds a feature to include user fuels and fixes a number of bugs. Add the option for users to define/assign their own fuels New option for atb_modifiers and modified_gen_atb to directly set parameter values rather than using a python operator Don't force retirement based on age if not specified in settings. Don't retire units unless there is a retirement year before the planning period year -- this is a change from previous behavior, where only units with retirement after the planning year would be kept Add new check for GenX model tags Update example system settings file based on results of check for model tags Expand testing What's Changed Fix fuel name bug through eia/atb tech map by @gschivley in https://github.com/PowerGenome/PowerGenome/pull/158 Check resource tags by @gschivley in https://github.com/PowerGenome/PowerGenome/pull/159 Add option for user fuels and prices by @gschivley in https://github.com/PowerGenome/PowerGenome/pull/163 Updating nrelatb.py by @xuqingyu in https://github.com/PowerGenome/PowerGenome/pull/162 Update GenX.py by @xuqingyu in https://github.com/PowerGenome/PowerGenome/pull/167 Adjust code to match heat rate table with cost_case column by @gschivley in https://github.com/PowerGenome/PowerGenome/pull/166 Format Python code with psf/black push by @github-actions in https://github.com/PowerGenome/PowerGenome/pull/170 User fuels, better tests, don't force age retirement, bug fixes by @gschivley in https://github.com/PowerGenome/PowerGenome/pull/169 New Contributors @github-actions made their first contribution in https://github.com/PowerGenome/PowerGenome/pull/170 Full Changelog: https://github.com/PowerGenome/PowerGenome/compare/v0.5.3...v0.5.4