[ruby/stringio] Bump version to 0.1.0

https://github.com/ruby/stringio/commit/4c1e267e1a
2019-11-30 15:26:01 +09:00 · 2019-11-30 15:26:01 +09:00 · af4b3f16ce
--- a/ext/stringio/stringio.c
+++ b/ext/stringio/stringio.c
@ -11,7 +11,7 @@

 **********************************************************************/

-#define STRINGIO_VERSION "0.0.3"
+#define STRINGIO_VERSION "0.1.0"

 #include "ruby.h"
 #include "ruby/io.h"