By Yoruk Bahceli (Reuters) – Battered U.S. and German government bond markets have just put in their best weekly performance since early March, suggesting a painful surge in yields due to high inflation may finally be abating as the focus turns to growth fears. Gilts in Britain, where the Bank of England warned of a potential recession, saw their best performance since 2011. Central banks have only just started tightening policy and inflation remains elevated, so there’s reason for caution. But here are four key shifts that suggest a turning point for the world’s biggest debt markets. 1/ NO CO…