Log Message:
tex-latexdiff{,-doc}: update to 1.3.0

Feature extensions:
* treat options to \documentclass as potential package names (some
  packages allow implicit loading of or imply selected packages)
* verbatim and lstlisting environments are marked-up with line-by-line
  in a similar style to non-verbatim text (requires the listing package
  to be installed). Also see new configuration variable VERBATIMLINEENV
* --flatten: now supports \verbatiminput and \lstlistinput
* --flatten: if file is not found, do not fail, simply warn and leave
  command unexpanded
* new config variable CUSTOMDIFCMD to allow defining special versions of
  commands  in added or deleted blocks
* added option -no-links, which suppress generation of hyperreferences.
  This is mostly (or only) useful in the context of the --only-changes
  option of latexdiff-vc in only-changes modes)

Bug fixes:
* pattern matching of \verb and \lstinline commands had an error which
  meant they would trigger on commands beginning with \verb.
* In description environments, mark up item descriptions by effectively
  reating the insides of item commannds as text commands
* improved pattern matching: now allows nested angular brackets, and is
  no longer confused by escaped curly braces
* improved pattern matching in COARSE mode: occasionally, the closing
  bracket or some other elements would be matched in an 'unnatural' way
  due to another sequence being more minimal in the computational sense,
  sometimes even causing errors due to tokens moving in or out of the
  scope of math environments. This is now discouraged by adding internal
  \DIFANCHOR commands (which are removed again in post-processing)
* added to textcmds: \intertext from amsmath package