1.50

• Add a --disable-rpath option to prevent libtool hardcoding rpaths in the executable.
• Renamed the hy-arevmda language to hyw, following the 2018-03-30 change to the BCP 47 language subtag registry making the newly registered hyw language code the preferred value for hy-arevmda. This change keeps support for detecting the hy-arevela and hy-arevmda language tags.
• Support any length replacement rule strings for the source part of the rule (replacing from the 'source' string to the 'target' string).
• Add more tests to check the various parts of espeak-ng.
• Various changes to clean up the codebase.
• Fix various compiler warnings (-Winitialized, -Wmissing-prototypes, -Wreturn-type, and -Wunused).

security:

• Fix several crashes in the emoji support.
• Fix several static analysis issues detected by Coverity Scan.
• Fix several static analysis issues detected by Microsoft Visual C++ /analyze.
• oss-fuzz support for the SSML logic.
• Fix running make check with -fsanitize=address (LLVM AddressSanitizer).

documentation:

• document the Kirshenbaum phoneme transcription scheme (used as the basis of espeak phonemes).
• document the X-SAMPA phoneme transcription scheme.
• document the Conlang X-SAMPA phoneme transcription scheme.

emoji:

• Update the emoji to Unicode 11.0.
• Update the emoji translations to CLDR 33.1.
• gd (Scottish Gaelic)
• sd (Sindhi)
• yue (Chinese (Cantonese))

new languages:

• ba (Bashkir) -- tc-dl, Valdis Vitolins
• hak (Hakka Chinese) -- Chen Chien-ting
• ht (Haitian Creole) -- Valdis Vitolins
• kk (Kazakh) -- boracasli14, Valdis Vitolins
• py (Pyash) -- Logan Streondj
• quc (K'iche') -- Valdis Vitolins
• ru-lv (Russian Latvia) -- Valdis Vitolins
• shn (Shan Tay Yai) -- ronaldaug
• uz (Uzbek) -- Valdis Vitolins

updated languages:

• af (Afrikaans) -- Christo de Klerk
• ar (Arabic) -- Valdis Vitolins, Mark Readdie, Hesham Assabahi
• cmn (Chinese Mandarin) -- materia-cccp
• de (German) -- Reece Dunn, Karl Eick
• en (English) -- Reece Dunn
• fa (Farsi/Persian) -- Shadyar Khodayari
• fi (Finnish) -- Juho Hiltunen
• fr (French) -- Shallowmallow, Karl Eick, maiido, Reece Dunn
• ku (Kurdish) -- rojanu
• it (Italian) -- chrislm
• lv (Latvian) -- Valdis Vitolins
• my (Myanmar/Burmese) -- Min Maung
• ru (Russian) -- Valdis Vitolins, Reece Dunn
• sd (Sindhi) -- Ejaz Shah
• ur (Urdu) -- Ejaz Shah
• vi (Vietnamese) -- Anh Hoang Nguyen