diff --git a/LICENSE b/LICENSE
--- a/LICENSE
+++ b/LICENSE
@@ -1,4 +1,4 @@
-Copyright (c) 2016 Omari Norman
+Copyright (c) 2016-2019 Omari Norman
 All rights reserved.
 
 Redistribution and use in source and binary forms, with or without
diff --git a/lib/Data/OFX.hs b/lib/Data/OFX.hs
--- a/lib/Data/OFX.hs
+++ b/lib/Data/OFX.hs
@@ -1,4 +1,6 @@
 {-# LANGUAGE OverloadedStrings, FlexibleContexts #-}
+{-# LANGUAGE DeriveDataTypeable #-}
+{-# LANGUAGE DeriveGeneric #-}
 -- | Parser for downloaded OFX files.
 --
 -- This parser was written based on the OFX version 1.03
@@ -25,9 +27,6 @@
 -- interested in. If you are interested in other data you can query
 -- the 'Tag' tree for what you need.
 --
--- For example, to read in the filename given on the command line and
--- parse it and print it nicely:
---
 -- The @ofx@ package includes two executable files that you can use at
 -- the command line to test the library and see how it works.  The
 -- @renderTransactions@ executable reads an OFX file on standard
@@ -87,7 +86,9 @@
 
   -- * Running parsers
   , parseOfxFile
+  , loadOfxFile
   , parseTransactions
+  , loadTransactions
   , prettyRenderOfxFile
   , prettyRenderTransactions
 
@@ -122,16 +123,18 @@
 
 import Control.Applicative (many, optional, (<|>))
 import Control.Monad (replicateM, (<=<))
+import Data.Data (Data)
+import Data.Maybe (listToMaybe)
+import Data.Monoid ((<>))
+import qualified Data.Monoid as M
 import qualified Data.Time as T
-  
+import Data.Typeable (Typeable)
+import GHC.Generics (Generic)
 import Text.Parsec.String (Parser)
 import Text.Parsec
   ( lookAhead, char, manyTill, anyChar, (<?>), eof,
     try, digit, many1, spaces, string, choice, parse )
 import qualified Text.Parsec as P
-import Data.Maybe (listToMaybe)
-import Data.Monoid ((<>))
-import qualified Data.Monoid as M
 import Text.PrettyPrint
   ( Doc, hang, text, sep, vcat, nest, (<+>), ($$),
     parens, brackets, render )
@@ -160,7 +163,7 @@
 -- @tag:value@ followed by a newline. These are followed by a blank
 -- line.
 data OFXHeader = OFXHeader HeaderTag HeaderValue
-  deriving (Eq, Show, Read)
+  deriving (Eq, Show, Read, Data, Generic, Typeable)
 
 -- | The name of an OFX tag
 type TagName = String
@@ -173,7 +176,7 @@
 -- tags. In OFX, a tag either has data and no child elements, or it
 -- has no data and it has child elements.
 data Tag = Tag TagName (Either TagData [Tag])
-  deriving (Eq, Show, Read)
+  deriving (Eq, Show, Read, Data, Generic, Typeable)
 
 -- | All the data from an OFX file.
 data OFXFile = OFXFile
@@ -183,7 +186,7 @@
   -- ^ All the data will be contained in a root tag with the TagName
   -- @OFX@.
 
-  } deriving (Eq, Show, Read)
+  } deriving (Eq, Show, Read, Data, Generic, Typeable)
 
 --
 -- # Parsers
@@ -512,7 +515,7 @@
   -- ^ Repeating payment / standing order
 
   | TOTHER
-  deriving (Eq, Ord, Show, Read)
+  deriving (Eq, Ord, Show, Read, Data, Generic, Typeable)
 
 -- | A single STMTTRN, see OFX spec section 11.4.2.3.1. This is most
 -- likely what you are interested in after downloading a statement
@@ -619,7 +622,7 @@
     , txCurrency :: Maybe (Either Currency OrigCurrency)
     -- ^ Currency option. OFX spec says to choose either CURRENCY or
     -- ORIGCURRENCY.
-    } deriving (Show, Read)
+    } deriving (Show, Read, Data, Generic, Typeable)
 
 data Payee = Payee
   { peNAME :: String
@@ -631,7 +634,7 @@
   , pePOSTALCODE :: String
   , peCOUNTRY :: Maybe String
   , pePHONE :: String
-  } deriving (Eq, Show, Read)
+  } deriving (Eq, Show, Read, Data, Generic, Typeable)
 
 -- | Can be either REPLACE or DELETE.
 data CorrectAction
@@ -640,7 +643,7 @@
 
   | DELETE
   -- ^ Deletes the transaction referenced by the CORRECTFITID
-  deriving (Eq, Show, Read)
+  deriving (Eq, Show, Read, Data, Generic, Typeable)
 
 data BankAcctTo = BankAcctTo
   { btBANKID :: String
@@ -657,7 +660,7 @@
 
   , btACCTKEY :: Maybe String
   -- ^ Checksum for international banks
-  } deriving (Show, Read)
+  } deriving (Show, Read, Data, Generic, Typeable)
 
 data CCAcctTo = CCAcctTo
   { ctACCTID :: String
@@ -666,14 +669,14 @@
   , ctACCTKEY :: Maybe String
   -- ^ Checksum for international banks
 
-  } deriving (Eq, Show, Read)
+  } deriving (Eq, Show, Read, Data, Generic, Typeable)
 
 data AcctType
   = ACHECKING
   | ASAVINGS
   | AMONEYMRKT
   | ACREDITLINE
-  deriving (Eq, Show, Ord, Read)
+  deriving (Eq, Show, Ord, Read, Data, Generic, Typeable)
 
 acctType :: String -> Err AcctType
 acctType s
@@ -691,13 +694,13 @@
 
   , cdCURSYM :: String
   -- ^ ISO-4217 3-letter currency identifier
-  } deriving (Eq, Show, Read)
+  } deriving (Eq, Show, Read, Data, Generic, Typeable)
 
 data Currency = Currency CurrencyData
-  deriving (Eq, Show, Read)
+  deriving (Eq, Show, Read, Data, Generic, Typeable)
 
 data OrigCurrency = OrigCurrency CurrencyData
-  deriving (Eq, Show, Read)
+  deriving (Eq, Show, Read, Data, Generic, Typeable)
 
 --
 -- # Helpers to build aggregates
@@ -971,9 +974,27 @@
 parseOfxFile :: String -> Err OFXFile
 parseOfxFile = either (Left . show) (Right . id) . parse ofxFile ""
 
--- | Parses an OFX file and gets the list of 'Tranasction'.
+-- | Parses an OFX file and gets the list of 'Transaction'.
 parseTransactions :: String -> Err [Transaction]
 parseTransactions = transactions <=< parseOfxFile
+
+-- | Loads an OFX file from disk, parses it, and returns the
+-- resulting 'OFXFile'.  Uses 'fail' if the parse fails.
+loadOfxFile :: FilePath -> IO OFXFile
+loadOfxFile fp = do
+  txt <- readFile fp
+  case parseOfxFile txt of
+    Left e -> fail e
+    Right g -> return g
+
+-- | Loads an OFX file from disk, parses it, and returns the resulting list of
+-- 'Transaction'.  Uses 'fail' if the parse fails.
+loadTransactions :: FilePath -> IO [Transaction]
+loadTransactions fp = do
+  txt <- readFile fp
+  case parseTransactions txt of
+    Left e -> fail e
+    Right g -> return g
 
 -- # Parsing and pretty printing
 
diff --git a/ofx.cabal b/ofx.cabal
--- a/ofx.cabal
+++ b/ofx.cabal
@@ -1,18 +1,10 @@
--- This Cabal file generated using the Cartel library.
--- Cartel is available at:
--- http://www.github.com/massysett/cartel
---
--- Script name used to generate: gen-ofx-cabal
--- Generated on: 2016-07-12 21:19:09.028404 EDT
--- Cartel library version: 0.16.0.0
-
 name: ofx
-version: 0.4.2.0
+version: 0.4.4.0
 cabal-version: >= 1.10
 license: BSD3
 license-file: LICENSE
 build-type: Simple
-copyright: Copyright (c) 2016 Omari Norman
+copyright: Copyright (c) 2016-2019 Omari Norman
 author: Omari Norman
 maintainer: omari@smileystation.com
 stability: Experimental
@@ -47,9 +39,9 @@
     lib
   build-depends:
       base >= 4.8 && < 5
-    , parsec >= 3.1
-    , pretty >= 1.1
-    , time >= 1.4
+    , parsec
+    , pretty
+    , time
 
 source-repository head
   type: git
@@ -68,9 +60,9 @@
     lib
   build-depends:
       base >= 4.8 && < 5
-    , parsec >= 3.1
-    , pretty >= 1.1
-    , time >= 1.4
+    , parsec
+    , pretty
+    , time
 
 Executable renderTransactions
   main-is: renderTransactions.hs
@@ -85,6 +77,6 @@
     lib
   build-depends:
       base >= 4.8 && < 5
-    , parsec >= 3.1
-    , pretty >= 1.1
-    , time >= 1.4
+    , parsec
+    , pretty
+    , time