starting new branch dev-aama for default graph
trouble with default, going back to branch dev
adding docbook and slides presentation to aama/docs
merged aama-dev with dev, language-specific URIs
added aaama/README.txt to explain use of language-specific URIs
added supplementary files for aaama/README
improved lexadd.xsl to generate provisional dummy lexemes; brought beja-arteiga up to date and added beja-atmaan