portage has 2.0.10, which is quite old. The difference is really only bug fixes, and i really expect no problem with the update. Remember that this is a compile-time dependency, and absolutely not a runtime one. Reproducible: Always
Bumped, thanks for reporting!
thanks for being so quick! I guess 2.0.13 can be marked 'stable' on most platform. (2.0.5 is already, and there is no dangerous changes between .5 and .13)