chaning colors.
changlog.
changelog.
ver bumps up.
fixing the help.
Displaying "-:-" when checking.
don't use hiding.
fixing a bug of removeMainTarget.

If CPP is specified, a temprary file name was used.
allowing completion, for instance, for "[Byte" to "[ByteString".
displaying qualified prefix.
implementing ghc-jump-file.
making multiple same errors to a single.
insert vs highlight.
displaying also a function name.
defining ghc-preferred-modules.