 
            
            
            
            
                23 May
                
                    2013
                
            
            
                23 May
                
                '13
                
            
            
            
        
    
                9:44 p.m.
            
        +1 Generalise Prelude.mapM etc +1 Remove Prelude.mapM etc -1 Add more monomorphic variants to Prelude (e.g. whenJust) -1 Nothing -- Live well, ~wren