0.6.8

What's Changed

• Increase dwarf stack size sample from 16k to 64k by @bobrik in #360
• Run stacks through rustc_demangle by @bobrik in #363
• Update addr2line setup by @QuarticCat in #364
• typo by @ada4a in #367
• Make initial_command() return Result by @ldm0 in #370
• Make Windows support more obvious by @stefnotch in #344
• Use xctrace on macOS by @ldm0 and @allenbenz in #374