TMW->Wylie text. All the conversions show you which format they take
as input and which format they give as output.
File filter for ACIP files added.
The GUI converter suggests a file extension wisely.
Fixed newline bug in ACIP->Unicode converter.
bugs; it is pre-alpha. It's usable, though, and finds tons of errors
in ACIP input files, with the user deciding just how pedantic to be.
The biggest outstanding bug is the silent one: treating { }, space, as
tsheg instead of whitespace when we ought to know better.
