develop -> master

[jenhagg]

Purpose

Merge to master for new release

What's Changed

• Add subclass to get electrification profiles and versions by @jenhagg in Add subclass to get electrification profiles and versions #616
• fix: avoid Exception when calling get_load_shed on a Scenario without load shed by @danielolsen in fix: avoid Exception when calling get_load_shed on a Scenario without load shed #624
• Change access to area_to_loadzone function by @rouille in Change access to area_to_loadzone function #625
• Aggregate demand profiles during scenario preparation by @jenhagg in Aggregate demand profiles during scenario preparation #626
• Combine scenario list from different sources by @jenhagg in Combine scenario list from different sources #629
• fix: save correct data to case_storage.mat by @jenhagg in fix: save correct data to case_storage.mat #637
• Relocate functions exporting data by @rouille in Relocate functions exporting data #634
• fix: pin fs version to avoid regression in latest by @jenhagg in fix: pin fs version to avoid regression in latest #639
• Bump version to v0.5.3 by @jenhagg in Bump version to v0.5.3  #642
• develop -> master by @jenhagg in develop -> master #643

Full Changelog: v0.5.2...v0.5.3