fix: move from Data.MathExpr to Numeric.MathExpr

mathexpr.cabal

@@ -1,5 +1,5 @@
 name:                mathexpr
-version:             0.2.0.1
+version:             0.3.0.0
 synopsis:            Parse and evaluate math expressions with variables and functions
 description:         A simple tool to evaluate math expressions as strings with support for custom functions and operators
 homepage:            https://github.com/mdibaiee/mathexpr
@@ -15,7 +15,7 @@ cabal-version:       >=1.10
 
 library
   hs-source-dirs:      src
-  exposed-modules:     Data.MathExpr
+  exposed-modules:     Numeric.MathExpr
   build-depends:       base >= 4.7 && < 5,
                        data-default-class
   default-language:    Haskell2010

src/Numeric/MathExpr.hs

@@ -1,5 +1,5 @@
 {-# Language ScopedTypeVariables #-}
-module Data.MathExpr
+module Numeric.MathExpr
     ( evaluate
     , Settings (..)
     , defaultFunctions