In SMIL 2.1, <switch> nodes may be enclosed in <par>. See http://www.w3.org/TR/SMIL2/smil-timing.html#edef-par
When it uses a capath instead of a cafile, 'get_ca_certs' or 'cert_store_stats' only returns certificates already used in a connection. (see #5364)
It's now provided by `f4m_id`
Some formats are now 404
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