v0.8.19

What's Changed

• feat(sandbox): increase max cpu secs to match shell tool by @EricLBuehler in #2264
• feat(server): support json_object response format by @EricLBuehler in #2265
• fix(core): safer engine shutdown process by @EricLBuehler in #2266

Full Changelog: v0.8.18...v0.8.19