Singapore’s Covid-19 outbreak may be slowing. The number of new local infections fell in the past week compared to a week earlier for the first time since mid-October, marking a key milestone that could lead to an easing of restrictions in the financial hub.The Southeast Asian city state is tracking its local caseload on a week-over-week basis to show how fast and in what direction the virus is moving.Called the weekly infection growth rate, the ratio is critical for Singapore’s reopening plans…