According to github statistics there were 296 contributors in Doge's development. It has been more than a year sine last change was made. It is quite possible that in private space some work at some level might be carried out. When and if there will be need of any change or improvement in anything we will be seeing movement on it. This no move in market has been for quite some time this indicates breakout anytime.
Dogecoin is one of the classic case in crypto.
Source code almost lack of updates over time.
There are nearly nothing changed for years.
However, what is most important for Dogecoin is its widely appearance.
The appearance, around the crypto space, if will be maintained, is enough for Dogecoin.
Very good publicity together with continued support and adoption had made this coin a popular hit among crypto enthusiasts and this trend will be sustained in the near immediate future yet I hope more improvements would be done with it asap.