Some minidom code changed between 3.2 and 3.3, so to be sure to avoid
differenced in behavior I’m backporting these tests added by MvL.

Patch by Ralf Schmitt.

I assume that most users looking at this page are looking for a library
to process XML, not a low-level parser.  First proposed in #11379.

source generates a nifty link to the Mercurial web viewer.

Misc/COPYRIGHT was renamed twelve years ago to LICENSE and later copied
to the main docs, to which there is already a link.

view.obj==NULL and view.obj==base.

if the view has exported buffers. Make this official by uncommenting
a test case.

Issue #14007: accept incomplete TreeBuilder objects (missing start/end/data/close) for the Python implementation as well. Add disabled tests for the doctype() method.

getbuffer redirection scheme.

Patch by Zooko O'Whielacronx.

Issue #14166: Pickler objects now have an optional `dispatch_table` attribute which allows to set custom per-pickler reduction functions.
Patch by sbt.