changed x-lens to _x-lens and cabal-info

Pioneers.cabal

@@ -1,6 +1,6 @@
 name:           Pioneers
 version:        0.1
-cabal-version:  >=1.2
+cabal-version:  >= 1.18
 build-type:     Simple
 author:         sdressel
 
@@ -32,14 +32,15 @@ executable Pioneers
                    text >=0.11,
                    array >=0.4,
                    random >=1.0.1,
-                   transformers >=0.3.0 && <0.4,
+                   transformers >=0.3.0,
                    mtl >=2.1.2,
                    stm >=2.4.2,
                    vector >=0.10.9 && <0.11,
-                   distributive >=0.3.2 && <0.4,
-                   linear >=1.3.1 && <1.4,
-                   lens >=3.10.1 && <3.11,
+                   distributive >=0.3.2,
+                   linear >=1.3.1, 
+                   lens >=4.0,
                    SDL2 >= 0.1.0,
                    time >=1.4.0 && <1.5,
                    GLUtil >= 0.7
+  Default-Language: Haskell2010