- update to 20221101:
* Bugfix - removed forgotten if-then code used with scaling tests.
Majority of users won't notice a difference since most FontForge
fonts are created in the +x,+y quadrant. Users that might see a
change/difference are users drawing only in the -x, -y quadrant.
* Enhanced libspiro to allow closed-loop spiros starting with '['
or 'a' by seeking the first available 'v', 'c', or 'o' as start,
which may be found later in the spiro curve. This was the least
modification needed to allow call-test10 or call-test11 to pass.
* Due to confusion created when ppedit was also re-licensed as MIT
APACHE and GPL2+, it's necessary to re-clarify libspiro is GPL3+.
In summary, GPL can include MIT code, MIT code cannot accept GPL.
Please note code not in ppedit like libspiro's java is GNU GPL2+.
Please note that libspiro's improvements or patches are also GPL.
* Thanks to orbea for bugfixes concerning linking and linker flags,
and removing .libs from linker path (some linkers don't like it).
* Added more commenting in spiroentrypoints.h to clarify functions.
* Reconfigured code to avoid exporting bezctx_intf.h since this is
supposed to be internal to libspiro and not for external calling.
* Also added https://gcc.gnu.org/wiki/Visibility to reduce exports.
* SPIRO_INTERNAL_BEZCTX and call-test21.c added for simpler method
of accessing libspiro for programs that only need the end result.
* Test added for 'a','h' to ensure points don't overlap, else exit. (forwarded request 1060006 from dirkmueller)