Updates for 0.7

Author: paf31

src/Data/Maybe.purs

@@ -1,5 +1,7 @@
 module Data.Maybe where
 
+import Prelude
+
 import Control.Alt (Alt)
 import Control.Alternative (Alternative)
 import Control.Extend (Extend)

src/Data/Maybe/First.purs

@@ -1,5 +1,7 @@
 module Data.Maybe.First where
 
+import Prelude
+
 import Control.Comonad (Comonad)
 import Control.Extend (Extend, extend)
 import Data.Functor.Invariant (Invariant, imapF)

src/Data/Maybe/Last.purs

@@ -1,5 +1,7 @@
 module Data.Maybe.Last where
 
+import Prelude
+
 import Control.Comonad (Comonad)
 import Control.Extend (Extend, extend)
 import Data.Functor.Invariant (Invariant, imapF)

src/Data/Maybe/Unsafe.purs

@@ -1,5 +1,7 @@
 module Data.Maybe.Unsafe where
 
+import Prelude
+
 import Data.Maybe
 
 -- | A partial function that extracts the value from the `Just` data