[CWB] CWB and CoNLL format

[Stefan Evert]

Dear all,

as of v3.4.28 (i.e. the most recent code from the SVN repository), CWB has full support for reading and writing CoNLL-style files.  Of course, dependency links are still stored as token numbers in regular p-attributes – this will only change with Ziggurat and CWB 4.

Suitable command-line options for CoNLL format are documented in Sec. 2 and 7 of the current draft of the CWB Encoding Tutorial, available from this link:

	https://sourceforge.net/p/cwb/code/HEAD/tree/doc/tutorials/CWB_Encoding_Tutorial.pdf?format=raw

Testers are highly welcome!

Best,
Stefan