Number to Text conversion

Hi,

may I suggest adding conversion functions such as

import qualified Data.Text as T
import qualified Data.Text.Lazy as T (toStrict)
import qualified Data.Text.Lazy.Builder as B
import qualified Data.Text.Lazy.Builder.Int as B
import qualified Data.Text.Lazy.Builder.RealFloat as B

realFloatToText :: RealFloat a => a -> T.Text
realFloatToText = T.toStrict . B.toLazyText . B.realFloat

intToText :: Integral a => a -> T.Text
intToText = T.toStrict . B.toLazyText . B.decimal

to `Data.Text` because I spent now around two hours in finding a way to convert numbers to Text objects. Maybe there is a better way, in that case it would be nice to have it documented in the main file of the module.

Thank you!