What's new in thtk 3:

thecl: Double quotes in ECL files are now escaped.
thdat: Support for TH75 has been removed.
thanm: Files will compress faster, but use less efficient compression.
thmsg: A new program for extracting and recreating message files.
thtk: Text strings are no longer converted from their original character set.
thecl: The output format has been changed in ways that are not compatible with
       thtk 2.
thecl: Support for TH95 has been added.
thecl: Support for TH06 has been added.
thtk: Manual pages have been written to replace README.
