[ruby/abbrev] Bump up v0.1.2

https://github.com/ruby/abbrev/commit/b362e8e3b9

lib/abbrev.rb

@@ -47,7 +47,7 @@
 #     "w"       => "winter" }
 
 module Abbrev
-  VERSION = "0.1.1"
+  VERSION = "0.1.2"
 
   # Given a set of strings, calculate the set of unambiguous abbreviations for
   # those strings, and return a hash where the keys are all the possible