v1.9.0

Small improvements & fixes, mostly related to template variables.

Improved

• change swe-rex env usage to set merge_output_streams True by @carlosejimenez in #411
• Enh: Allow to use model cost in templates by @klieret in #426
• Enh: Persist task vars for template formatting by @klieret in #428
• Feat: Add minimal logging to environments & batch runs by @klieret in #431
• Enh: Output option for swebench-single by @klieret in #434

Fixed

• Fix: Getting local environment variables as template variables even though we're running in docker

Full Changelog: v1.8.1...v1.9.0