cups-filters 2.0b3

[tillkamppeter]

Fixes of bugs found while packaging for distros, mainly in the build system and the source code documentation

• texttopdf: Do not include fontconfig.h in the CUPS filter wrapper
• Build system: Do not explicitly check for libpoppler-cpp
  The cups-filters package does not contain any code using libpoppler-cpp, therefore we let ./configure not check for it.
• COPYING, NOTICE: Simplification for autotools-generated files
  autotools-generated files can be included under the license of the upstream code, and FSF copyright added to upstream copyright list. Simplified COPYING appropriately.
• Makefile.am: Include LICENSE in distribution tarball
• Add templates for issue reports on GitHub. This makes a selection screen appear when clicking "New Issue" in the web UI, to select whether the issue is a regular bug, a feature request, or a security vulnerability.

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This discussion was created from the release cups-filters 2.0b3.