testing
 use quickcheck, hunit
 regression/compatibility test framework

features
 auto transaction amounts
 , thousand separator
 most useful commands
  register
   entry selection
    matching by account/description regexp
   show running total
  balance
   show balances, summarized or in depth
   matching by account regexp
  print
  -j and -J graph data output
  auto entry generation
  directives, especially include
  read gnucash files

environment
 getopt processing
 smart ledger file finding

documentation
 literate docs
 haddock

marketing
 set up as a cabal/hackage project following wiki howto ?
 announce on haskell list, wiki