pipes-text-0.0.0.6: Text pipes.

Many of the pipes and other operations defined here mirror those in the `pipes-bytestring` library. Folds like length and grouping operations like lines simply adjust for the differences between ByteString and Text and Word8 and Char. It is hoped that this homogeneity will aid in learning the terms and programming style associated with both of them.

The most distinctive addition of the library to that core is the apparatus for encoding and decoding Text and ByteString.

Also defined are some simple functions akin to the String operations in Prelude, and others like the utilities in Text.

All of the IO operations defined here - e.g readFile, stdout etc. - are conveniences akin to those in IO which e.g. try to find the system encoding and use the exceptions defined in the text library. Proper IO in the sense of this library will employ `pipes-bytestring` in conjuntion with pure operations like decodeUtf8 and encodeUtf8 that are defined here.