v3.9.0 Disaggregated heat loads, bug fixes, improved solar datasets

What's Changed

• Fix bug in custom CO2 escalation rate by @adfarth in #582
• Disaggregated heat load inputs and outputs + Process heat load by @zolanaj in #583
• v3.9.0 master < develop by @adfarth in #585

This update now uses REopt.jl v0.46.1. Which includes:

• https://github.com/NREL/REopt.jl/releases/tag/v0.46.1
• https://github.com/NREL/REopt.jl/releases/tag/v0.46.0

Full Changelog: v3.8.0...v3.9.0