Update rere.cabal: change maintainer and bump base bound

Author: ulysses4ever

rere.cabal

@@ -10,7 +10,7 @@ description:
   we can recognize context-free grammars.
 
 author:             Oleg Grenrus <[email protected]>
-maintainer:         Oleg Grenrus <[email protected]>
+maintainer:         Artem Pelenitsyn <[email protected]>
 license:            BSD-3-Clause
 license-file:       LICENSE
 extra-source-files:
@@ -36,6 +36,7 @@ tested-with:
    || ==9.4.7
    || ==9.6.3
    || ==9.8.1
+   || ==9.10.1
 
 source-repository head
   type:     git
@@ -61,7 +62,7 @@ library
 
   -- GHC boot libraries
   build-depends:
-    , base          >=4.3.0.0  && <4.20
+    , base          >=4.3.0.0  && <4.21
     , containers    ^>=0.4.0.0 || ^>=0.5.0.0 || ^>=0.6.0.1
     , parsec        ^>=3.1.12.0
     , transformers  ^>=0.3.0.0 || ^>=0.4.2.0 || ^>=0.5.2.0 || ^>=0.6.1.0