How to handle libgambatte soname?

Hi all, upstream has recently released gambatte v0.4.1. While showing differences between v0.4.0 and v0.4.1, it seems to me that the public interface of libgambatte changed. Therefore I need to bump the soname. Upstream doesn't provide a soname, so when I submitted v0.4.0 for review I added it as libgambatte.so.0; libgambatte.so.0.4.0 and libgambatte.so (in the devel package) are symlinks for libgambatte.so.0. Now I don't know if I did the right thing in providing a soname that doesn't match the version. How would you handle it? Spec file (of v0.4.0) is available here: http://cvs.rpmfusion.org/viewvc/rpms/gambatte/devel/gambatte.spec?revisio... Thanks in advance for your suggestions. Bye, Andrea.