irb 1.3.8.pre.4

v1.3.8.pre.4

on Ruby Gems

What's Changed

• Use test-unit gem instead of deep copy test-suite from ruby repo by @hsbt in #244
• Relax backtrace nest levels by @nobu in #272
• Follow up the latest of reline by @aycabta in #273

Full Changelog: v1.3.8.pre.3...v1.3.8.pre.4