cut-down sample of target data
writing some tests to flesh out interface
code to print a tree of tag names
develop wiki-dump XML handlers further
.gitignore file
handle dates (convert to UTC datetime)
fix test (some contributors are anonymous)
handle text tag, all tests pass on sample
more interesting output
ignore some more tags

These tags occur in the real dump but not in the
sample. The handling for unexpected tags
currently is to raise an exception, so these
needed to be ignored to allow dumps to be
processed to completion.

(No guarantees yet that all dumps will finish,
although the one from which the sample was
extracted has now been running for a fair while.)