5.4.0-rc1

What's Changed

This releases provides an improved PDF renderer, adds a new PAGE XML renderer, extends the API to retrieve the text angle/gradient and has lots of smaller updates for code and documentation:

• Update appveyor.yml - Url has changed by @softwaretirol in #4188
• Fix grey result of indexed PNG in pdfrenderer. by @sjbronner in #4189
• Fix some typos by @stweil in #4191
• normstrngs: add more hyphens and quotes by @bertsky in #4195
• Rename frk -> deu_latf (ISO 639-3, ISO 15924) by @stweil in #4202
• Fix some performance issues which were reported by Coverity Scan by @stweil in #4204
• Remove broken Dockerfile by @stweil in #4205
• PAGE XML renderer / export by @JKamlah in #4214
• Remove unsupported OpenCL code and related API functions by @stweil in #4220
• facilitate vectorization for generic build by @heshpdx in #4223
• Support training without lstmf files by @stweil in #4215
• Simplify GridSearch<...> variables using typedef equivalents by @sadra-barikbin in #4226
• Use std::min and std::max for min & max operations in makerow.cpp::most_overlapping_row() by @sadra-barikbin in #4229
• Fix a few typos in comments by @sadra-barikbin in #4227
• Remove an unused variable in paragraphs.cpp::DetectParagraphs() by @sadra-barikbin in #4228
• A few refactors in some files by @sadra-barikbin in #4225
• Fix output and issues reported by Coverity Scan for PAGE XML renderer by @stweil in #4234
• Update documentation by @stweil in #4235
• Fix some issues which were reported by GitHub code scanning by @stweil in #4236
• Improve CCUtil::main_setup (fixes issue #4230) by @stweil in #4239
• Allow for text angle/gradient to be retrieved by @Balearica in #4070

New Contributors

• @softwaretirol made their first contribution in #4188
• @sjbronner made their first contribution in #4189
• @JKamlah made their first contribution in #4214
• @heshpdx made their first contribution in #4223
• @Balearica made their first contribution in #4070

Full Changelog: 5.3.4...5.4.0-rc1