Version 3.3.0

• Enh #112: Add copy cURL button, sort request headers, fix UI (@xepozz)
• Enh #113: Simplify error log (@xepozz)
• Enh #114: Show full argument by click (@xepozz)
• Enh #116: Remove @anonymous postfix (@xepozz)
• Enh #117, #120: Show arguments table by click (@xepozz, @vjik)
• Bug #114: Stop click event on text selection (@xepozz)
• Bug #122: Do exit(1) after all shutdown functions, even postponed ones (@samdark)