namecoin-update.cabal: update

- Update the version number
- Update email address
- Remove unnesed default GHC extension

namecoin-update.cabal

@@ -1,5 +1,5 @@
 name:                namecoin-update
-version:             0.2.2.0
+version:             0.2.3.0
 synopsis:            Tool to keep namecoin names updated and well
 description:
 
@@ -11,8 +11,8 @@ description:
 license:             GPL-3
 license-file:        LICENSE
 author:              rnhmjoj
-maintainer:          micheleguerinirocco@me.com
-copyright:           Copyright (C) Michele Guerini Rocco
+maintainer:          rnhmjoj@inventati.org
+copyright:           (C) Michele Guerini Rocco 2022
 category:            Network
 build-type:          Simple
 cabal-version:       >=1.10
@@ -26,7 +26,7 @@ library
   exposed-modules:     Namecoin
   build-depends:       base <= 5.0, lens, wreq,
                        aeson, text, attoparsec
-  default-extensions:  TemplateHaskell, OverloadedStrings
+  default-extensions:  OverloadedStrings
                        RecordWildCards, DuplicateRecordFields
   default-language:    Haskell2010