Ignore-this: 788eb99b3948ce201769471919562114
The contract for the "encodeable" function says, in part, "If it yields False,
encodeChar must throw an exception.". This patch makes the ASCII encoding
instance throw an exception for non-ASCII characters.
darcs-hash:20100909222914-76d51-76d9891ae18f13751b004e2b6ed24401192ae79f
Now it's possible to change the character encoding while de-/encoding.
Also, it's possible to use any data structure as a source or target of the de-/encoding process.
darcs-hash:20090221203100-a4fee-6da31f2e37c30a3f5cd5f10af71984209488bb0b
