irb 1.3.7 on Ruby Gems

What's Changed

Disable locale warning from TruffleRuby by @nobu in #247
Sort ls result ordered by anscestry by @neko314 in #245
No need to manually disable locale warning on TruffleRuby anymore by @eregon in #250
Improve performance of show_source for large class by @pocke in #249
Fix error on ls object_cant_define_singleton by @pocke in #252
Update ls.rb without requiring Set, because Set is one of standard libraries by @neko314 in #254
Daily check by @nobu in #246
Pass local variables from workspace binding to lexer by @jeremyevans in #242
Show LANG and LC_ALL env by irb_info by @aycabta in #257
Show code page by irb_info on Windows by @aycabta in #258
Support non-English code page message by @aycabta in #259
Support int that follow on symbeg in IRB by @osyo-manga in #262

Full Changelog: v1.3.6...v1.3.7