Elevation shadow

[lalmanzar]

Hi @ReinBentdal, I was wondering why you don't use the Material boxshadows that are already on flutter when using elevation with the default color? that would make it look just like the first-party elevation. This is mostly because they use a combination of 3 shadows "Umbra Penumbra and Ambient Shadow."

https://github.com/flutter/flutter/blob/master/packages/flutter/lib/src/material/shadows.dart

[ReinBentdal]

Hi, the reason why i initially decided to not go with the build in material elevation was because i didnt like it as much. However the package has changed over time and i am now more interested in replicating the functionality the flutter team has implemented instead of implementing them in my own way. The problem with changing this now is that it will break widgets made with division and using elevation. I am in general very open for change if its beneficial long term which i think this feature is. I have been a bit inactive the last months due to being busy with other things. If you implement this feature and open a pull request, i will most likely accept it (if implemented right).