pdfsizeopt can now handle lilypond PDFs

[Werner LEMBERG]

Folks,


the author of pdfsizeopt

  https://github.com/pts/pdfsizeopt

has recently applied some bug fixes to make it work with lilypond
documentation files (cf. https://github.com/pts/pdfsizeopt/issues/11).

Using trueroad's approach (i.e., using `extractpdfmark'),
`lilypond-notation.pdf' generated from git on Feb. 27th has a size of
10019KByte.  After running pdfsizeopt, the size is reduced to
7962kByte; making the file smaller by 20%.

[As a side note, `notation.pdf' had a size of 24MByte six years
ago...]

I think it's a good idea to apply pdfsizeopt to all PDF files uploaded
to lilypond's web page.


    Werner