[containers] Proposal: Change to the Data.Map Monoid

[Julian Bean]

On 9 Oct 2015, at 08:37, Julian Bean <jules at jellybean.co.uk> wrote:

> 
> Would there be any downside to providing a package with a newtyped Map with all operations ported over? The newtype already exists in semigroups as UnionWith (Map k) v; what is missing is the entire Map API.
> 

Correction. The newtype exists in the package ‘reducers’ not ‘semigroups’.