Changelog for tttool-1.8.1

Changelog for tttool

The SVG patterns created with ./tttool oid-code and ./tttool oid-codes now have ids that are valid (no spaces).
The release tarball now contains a binary for Linux as well.
The release tarball now contains a copy of The tttool book

If the script for an oid code contains only one line, one can simply write
```
 house: P(welcome)
```
instead of
```
 house:
  - P(welcome)
```
./tttool oid-table aligns images on pixel boundaries, so that a naive rastering of the whole page still yields crisp pixels. Thanks to @m7thon for the patch!
The PDF output uses PDF patterns for much smaller PDF files.
The commands ./tttool oid-code and ./tttool oid-table can now also produce SVG output with SVG patterns:

--image-format SVG produces SVG with vector squares for the pixels, wihle --image-format SVG+PNG produces SVG with a small, repeated pixel graphics in the pattern
Games are now more likely to be properly round-tripped (GH issue #174)

./tttool oid-table sorts naturally now, so that the sequence is foo1 foo2 foo10, and not foo1 foo10 foo2.
Read and write the language field in the GME header (GH issue #105)

./tttool assemble: Do not fail with too many open files
Handle “other” play commands (FFE0, FFE1) even if their argument is not 0, with some crude syntax in the YAML format. The meaning of this argument is not yet understood, volunteers are welcome!

Completely re-done option parsing, so there now proper support for short and long options, arbitrary order of options, better error messages and per-command --help output.

Incompatibility: Some commands are now called differently. In particular, to generate PNG files with all codes from a YAML file, use ./tttool oid-codes, not ./tttool oid-code.
The size of the OID codes written by ./tttool oid-code is configurable.
The png files written by ./tttool oid-code and ./tttool oid-codes store their DPI value, so that importing them into DTP programs is likely to yield the desired result.
New command tttool oid-table that prints all OIDs of a given YAML file as a nice and handy table in a PDF file
The output of ./tttool games is more detailed.
Games are not exported by tttool export and assembled by tttool assemble. This way, existing Tiptoi products can be modified without losing them.
The “other” play commands (FFE0, FFE1, FB00) are implemented in the parser, printer and serializer, with syntax P*(..), PA*(..) and PA(..). These are not interesting to you unless you want to understand existing Tiptoi products.
Support for the “timer” action (FF00) with syntax T($register,123).
./tttool assemble will print all errors due to missing audio files, not just the first.
Fix various crashes in corner cases, mostly involving games. Thanks to @ToniMahagoni for reporting these!

New commands FB00 (alternative play range command), FFE0 (alternative play random sample) and FFE1 (alternative play all samples)
New pixel formats -d 1200d and -d 600d,w hich double the size of the dots.
Assign object IDs dependent on project IDs, to avoid overlap.
Fix missing support in tttool play for > and <=

The tttool play command is greatly enhanced:
- Audio samples are actually played (On linux, install sox).
- You can use the name of your scripts instead of the OID codes.
- The prompt supports a persistent history (press ↑).
- You can tab-complete your input.
tttool knows its own version.
tttool assemble warns if the comment field is too long for the GME file.

The language fields takes arbitrary strings, which will hopefully be understood by the text-to-speak engine.

The yaml files support a language field, specifying the default language for the text-to-speech feature.
The speak section of the yaml file can have subsections with differing languge settings, to allow multi-language files.
The text-to-speech feature will use either pico2wave or espeak, depending on what is available.
The windows release zipfile now comes with espeak and oggenc, so Windows users can use text-to-speech out of the box.