1.51

new features:

• Add support for speechPlayer.
• Add more tests to check the various parts of espeak-ng.
• Various changes to clean up the codebase (Juho Hiltunen)
• Remove support for l_length_mods language option
• Restructure "option brackets" language option to "brackets" and "bracketsAnnounced"
• Restructure "stressLength" and "stressAdd" language option
• New Language option: "lowercaseSentence" for ending a sentence if a period is followed by a lower case letter
• Add voice variants
• Rename zh to cmn (Mandarin)
• Rename zhy to yue (Cantonese)
• cmn (Mandarin) now assumes all latin characters all English text
  Use cmn-latn-pinyin for interpreting latin characters as pinyin
• Update list of voice varants for Android application
• Add Chromium extension (guest271314)
• Replace ieee80.c by a free software implementation (Ulrich Müller)

bug fixes:

• Fix reading malformed SSML (Christopher Brannon)
• Fix memory allocation (Christopher Brannon)
• Fix building and phoneme compilation (John Bowler)
• Fix build scripts for Android (Peter Vágner, Minas Tirith Citizen)

documentation:

• Add documentation about voice and language options.
• Add documentation about dictionary flags.

updated languages:

• ar (Arabic) -- king-dahmanus
• ba (Bashkir) -- boracasli98, Valdis Vitolins, Juho Hiltunen
• cmn (Mandarin) -- Silas S. Brown, Rongcui Dong, Icenowy Zheng, Juho Hiltunen
• de (German) -- Karl Eick, Henry Krumb
• el (Modern Greek) -- Reece Dunn (support for variant Greek letter forms)
• en (English) -- Steven Presser, Ben Talagan
• eo (Esperanto) -- AlsoScratch
• eu (Basque) -- agonzalezd
• fa (Farsi/Persian) -- Shadyar Khodayari
• ga (Gaelic (Irish)) Chen, Chien-ting
• grc (Ancient Greek) -- Reece Dunn (support for variant Greek letter forms)
• hak (Hakka Chinese) -- Juho Hiltunen
• haw (Hawaiian) -- Juho Hiltunen
• ka (Georgian) -- Juho Hiltunen
• kok (Konkani) -- Juho Hiltunen
• nb (Norwegian Bokmål) -- Juho Hiltunen
• nci (Classical Nahuatl) -- Juho Hiltunen
• hy (Armenian) -- tigransimonyan
• ia (Interlingua) -- nesrad
• it (Italian) -- Christian Leo
• ja (Japanese) -- fukuen, Juho Hiltunen
• jbo (Lojban) -- Juho Hiltunen, xunsku
• lv (Latvian) -- Valdis Vitolins
• mi (Māori) -- boracasli98
• py (Pyash) -- Andrii Logan Zvorygin
• shn (Shan Tay Yai) -- ronaldaug
• tr (Turkish) -- boracasli98, SeanTolstoyevski
• ur (Urdu) -- Ejaz Shah
• uz (Uzbek) -- boracasli98, Valdis Vitolins, Andiv06
• yue (Cantonese) -- Andiv06

new languages:

• be (Belarusian) -- Sergei B
• chr (Cherokee) -- Michael Conrad
• cv (Chuvash) -- boracasli98, Valdis Vitolins
• en-us-nyc (English, New York City) -- Richard Calvi
• haw (Hawaiian) -- Valdis Vitolins
• he (Hebrew) -- boracasli98, Valdis Vitolins
• io (Ido) -- José Miguel López, Valdis Vitolins
• lb (Luxembourgish) -- Marco Barnig, Valdis Vitolins
• ltg (Latgalian) -- Valdis Vitolins
• nog (Nogai) -- boracasli98, Valdis Vitolins
• piqd (Klingon) -- Valdis Vitolins
• qu (Quechua) -- Valdis Vitolins
• qdb (Lang Belta) -- Da Def, Valdis Vitolins
• qya (Quenya) -- Lucas Werkmeister
• sjn (Sindarin) -- Lucas Werkmeister
• smj (Lule Saami) -- Katri Hiovain, Sebastien Le Maguer
• th (Thai) -- Valdis Vitolins
• tk (Turkmen) -- boracasli98, Valdis Vitolins
• ug (Uyghur) -- boracasli98, Valdis Vitolins
• uk (Ukrainian) -- Valdis Vitolins

1.50

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

1.49.2

• Provide more validation when reading phoneme tables and voice/language files.
• Removed support for phoneme equivalence tables. These were disabled in the
  French and German language files.
• Allow pre- as well as post-jump rules in dictionary files.
• Support building the Windows version with Visual Studio 2013.
• Use language and accent names consistently across the language files.
• Group the encoding handling into a single place with a clean interface and tests.
• Support all ISO 8859 encodings.
• Support for multi-word text replacements in language dictionaries.
• Support compiling _emoji dictionary files if present.

bug fixes:

• Fix running make clean ; make.
• Fix reading stdin buffers larger than 1000.
• Fixed various language and parent BCP 47 codes (jp is now ja).
• Fixed several crashes and bugs in espeak_SetVoiceByName/Properties.

new languages:

• bpy (Bishnupriya Manipuri) -- Vardhan
• fr-CH (French (Switzerland)) -- Claude Beazley
• kok (Konkani) -- Vardhan
• mi (Māori) -- Graham Oliver
• sd (Sindhi, Arabic script) -- Vardhan, Ejaz Shah

updated languages:

• af (Afrikaans) -- Christo de Klerk
• de (German) -- Valdis Vitolins
• du (Dutch) -- Leonard de Ruijter
• en (English) -- Reece Dunn. Thanks to Kendell Clark for identifying mispronunciations.
• fa (Farsi/Persian) -- Shadyar Khodayari
• fr (French) -- Valdis Vitolins; Reece Dunn
• gu (Gujarati) -- Vardhan
• hi (Hindi) -- Vardhan
• it (Italian) -- chrislm
• ky (Kyrgyz) -- JRMeyer
• lv (Latvian) -- Valdis Vitolins
• mr (Marathi) -- Vardhan
• or (Oriya) -- Vardhan
• ur (Urdu) -- Ejaz Shah

Unicode Emoji support (from the Unicode Emoji 5.0, and CLDR 31.0.1 data files):

• af (Afrikaans)
• am (Amharic)
• ar (Arabic)
• az (Azerbaijani)
• bg (Bulgarian)
• bn (Bengali)
• bs (Bosnian)
• ca (Catalan)
• cs (Czech)
• cy (Welsh)
• da (Danish)
• de (German)
• el (Greek)
• en (English) -- American
• es (Spanish)
• et (Estonian)
• eu (Basque)
• fa (Farsi/Persian)
• fi (Finnish)
• fr (French)
• ga (Irish Gaelic)
• gu (Gujarati)
• hi (Hindi)
• hr (Croatian)
• hu (Hungarian)
• hy (Armenian)
• id (Indonesian)
• is (Icelandic)
• it (Italian)
• ja (Japanese)
• ka (Georgian)
• kn (Kannada)
• ko (Korean)
• ky (Kyrgyz)
• lt (Lithuanian)
• lv (Latvian)
• mk (Macedonian)
• ml (Malayalam)
• mr (Marathi)
• ms (Malay)
• my (Myanmar/Burmese)
• ne (Nepali)
• nl (Dutch)
• or (Oriya)
• pa (Punjabi)
• pl (Polish)
• pt (Portuguese) -- Brazil
• ro (Romanian)
• ru (Russian)
• si (Sinhala)
• sk (Slovak)
• sl (Slovenian)
• sq (Albanian)
• sr (Serbian)
• sv (Swedish)
• sw (Swahili)
• ta (Tamil)
• te (Telugu)
• tr (Turkish)
• ur (Urdu)
• vi (Vietnamese)
• zh (Chinese)

1.49.1

• Vim syntax support for rule files.
• Replace ieee80.c with the implementation at
  http://www.realitypixels.com/turk/opensource/ToFromIEEE.c.txt for Debian
  open source license compliance.
• Documentation updates.
• Emscripten support.
• Merged the Android port into the main espeak-ng codebase.
• Extend --compile-phoneme to support specifying the source directory for
  phoneme files.
• Support using any directory as the data home, not just espeak-ng-data.
• Don't install the default voice: use en as the default voice.

NOTE: The merger of the Android code is currently experimental. It is
missing support for recognising Unicode characters.

bug fixes:

• Fix .Lnn rule groups to allow groups above 62.
• Fix reporting the eSpeak NG version in the --version string and Windows
  installer.
• Fix a crash when calling LoadDictionary when using clang.
• Threading fixes and Mac OSX portability for the fifo and event code.
• Fixes for running the spect code on big-endian architectures.
• Fix determining the voice directory when installing the 32-bit Windows
  binaries on a 64-bit Windows system.
• Fix a regression with the saved parameter logic.
• Reduce the default buffer length to 60mS to improve latency.
• Don't override buffer length when using espeak-ng for audio.
• Fix detecting doubled consonants when using Unicode characters.
• Fix speaking 1,,2, etc. in languages that use , as a decimal separator.

updated languages:

• af (Afrikaans) -- Christo de Klerk
• en (English) -- Valdis Vitolins
• fa (Farsi/Persian) -- Shadyar Khodayari
• it (Italian) -- chrislm
• ky (Krygyz) -- JRMeyer
• lv (Latvian) -- Valdis Vitolins
• tr (Turkish) -- Valdis Vitolins

new languages:

• ar (Arabic) -- Taha Zerrouki
• jp (Japanese) -- Reece Dunn (NOTE: Hiragana and Karakana only.)

1.49.0

• Support the --compile-mbrola command-line option.
• Support the --compile-phonemes command-line option.
• Support the --compile-intonations command-line option.
• Support SSML <phoneme alphabet="espeak" ph="..."> tags.
• Added man files for the speak-ng and espeak-ng command-line programs.
• Created a companion espeak-ng API to provide more detailed error codes and
  provide access to the new espeak-ng functionality.
• Fixed many logic and security issues reported by clang scan-build, Coverity
  and msvc /analyze.
• Group languages by their language family and use BCP47 compliant names.
• Support for Windows and BSD platforms.
• Removed support for WinCE, MS-DOS and RiscOS.
• Add support for maintainer and status field in voice files for tracking
  voice maintenance.
• Vim syntax highlighting for espeak dictionary (list and rules) files.
• Support reading input from named pipes.
• Fix wav file truncation when reading multiline text from stdin or a named pipe.

build:

• Build the code with a C99 compiler, instead of a C++ compiler.
• Provide a pkg-config file (patch by Luke Yelavich).
• Use -fPIC to support sparc/sparc64 architectures.
• Removed the local portaudio header files.
• Use the system's sonic library and header files.
• Output phoneme compilation errors to stderr.
• Generate build failures if building phoneme, intonation or dictionary files
  contain errors.
• Provide modern Visual Studio project files to build eSpeak NG on Windows,
  with a WiX-based project to create an MSI installer.
• Use the NetBSD getopt_long implementation on Windows.

restructuring:

• Moved the library code to src/libespeak-ng.
• Renamed espeak to espeak-ng.
• Renamed speak to speak-ng.
• Use the libespeak-ng API in speak-ng using a shared implementation with
  espeak-ng.
• Moved the code to build the mbrola voice data, phoneme tables and intonation
  data to libespeak-ng.
• Removed the espeakedit program and the associated wxWidgets dependency.
• Removed the platforms directory and approaching portability in a similar way
  to how libressl handles portability.
• Converted the documentation to markdown.
• Group the Windows and POSIX mbrowrap code to provide the mbrowrap.h
  implementation in a single place.
• Replaced the audio APIs with PCAudioLib to improve portability of the audio
  and to share that across different projects.
• Reworked the synchronous audio to share the code paths with asynchronous
  audio.

cleanup:

• Removed unused/empty internal header files.
• Removed unused and commented out code.
• Reformatted the code to use a consistent style and indentation.
• Fixed many GCC and clang warnings.
• Improved the error handling within the codebase to report the underlying
  error where possible.
• Inlined several wrapper methods that were adding little/no value.

updated languages:

• en (English) -- Thanks to Kendell Clark for identifying mispronunciations.
• el (Greek) : improved polytonic Greek support
• es (Spanish) : ChrisLeo (improved intonations)
• fa (Persian) -- Shadyar Khodayari
• fr (French) -- Thomas Guillory
• ga (Irish Gaelic) -- Jim Regan
• it (Italian) -- ChrisLeo
• lv (Latvian) -- Valdis Vitolins

new languages:

• gn (Guarani) -- ChrisLeo
• ky (Kyrgyz) -- JRMeyer
• mb-br2 (Brazillian Portuguese)
• mb-de* (German) : extend support coverage of the German MBROLA voices
• mb-lt1 (Lithuanian) -- embar
• mb-lt2 (Lithuanian) -- embar
• mt (Maltese)
• my (Myanmar/Burmese) -- Min Maung, Lwin Moe
• tn (Setswana)
• tt (Tatar)