JRuby 1.5.0 Released

JRuby 1.5.0 has been released.  It's been a long time in the works, JRuby 1.4.0 was released nearly 5 months ago.

The changes from 1.4.0 to 1.5.0 are far too numerous to list.  In all, there were 1250 commits since 1.4.0.  The focus, however, has been compatibility.  For the most part, JRuby is compatible with MRI, but as with anything of this nature, there are a million little incompatibilities that pop up that have to be taken care of.  But of course there have been some performance improvements and improvements involving FFI (the Foreign Function Interface, which allows you to call native code), and with its Java integration.  For the full list, see the release announcement.