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+0.5.10
+======
+* Add `get_verify_error_string`, `get_start_date`, `get_expiration_date` (#57).
+* Release master lock on ALPN failure (#58).
+
+0.5.9 (2019-07-15)
+=====
+* Backward compatibility with OpenSSL 1.0.2 (#53).
+
+0.5.8 (2019-07-03)
+=====
+* Better error reporting.
+* Add support for hostname validation (#49).
+* Add ALPN support (#37, #38, #48).
+
+0.5.7 (2018-10-25)
+=====
+* Correctly set #defines (#40).
+* Correctly deal with non-existent directories for Homebrew (#42).
+
+0.5.6 (2018-09-12)
+=====
+* Switch to the dune build system.
+
+0.5.5 (2017-10-13)
+=====
+* Make sure that LDFLAGS is honored during build.
+
+0.5.4 (2017-10-02)
+=====
+* Enable safe-string compatibility (#32).
+* Add -std=c99 to CFLAGS (#29).
+
+0.5.3 (2016-11-08)
+=====
+* Remove -ansi flag to be compatible with OCaml 4.04 (thanks Mark Shinwell).
+* Use accessor functions for X509_STORE_CTX.
+* Change CLIBS order to allow static linking.
+
+0.5.2 (2015-11-23)
+=====
+* Add OPENSSL_NO_SSL3 preprocessor flag to disable SSLv3 (thanks Jérémie
+  Courrèges-Anglas).
+
+0.5.1 (2015-05-27)
+=====
+* Fix META file for versions of OCaml older than 4.02.0 (thanks Anil
+  Madhavapeddy, closes #20).
+
+0.5.0 (2015-05-18)
+=====
+* Allow to honor server cipher preferences (thanks mfp, closes #18).
+* Add functions for reading into/writing from bigarrays, avoiding copy (thanks
+  mfp, closes #15).
+* Support disabling SSL protocol versions (thanks Edwin Török, closes #13).
+* Use Bytes instead of String for read and write, changes the ABI thus the
+  version bump (thanks Vincent Bernardoff, closes #16, and mfp, closes #19).
+* Make verbosity of client_verify_callback configurable (thanks Nicolas Trangez,
+  closes #12).
+* Fix build with old versions of SSL (thanks Edwin Török, closes #10).
+
+0.4.7 (2014-04-21)
+=====
+
+* Add support for TLS1.1 and TLS1.2 (thanks Thomas Calderon).
+* Add function to initialize Diffie-Hellman and elliptic curve parameters
+  (thanks Thomas Calderon and Edwin Török).
+* Add set_client_SNI_hostname to specify client-side SNI hostname (thanks
+  Mauricio Fernandez).
+* Fix double leave of blocking section in ocaml_ssl_accept (thanks Edwin Török).
+* Check for errors in SSL_connect/SSL_accept (thanks Jérôme Vouillon).
+* Clear the error queue before calling SSL_read and similar functions;
+  SSL_get_error does not work reliably otherwise (thanks Jérôme Vouillon).
+* Allow static linking on Mingw64 (thanks schadinger).
+
+0.4.6 (2011-10-16)
+=====
+* Added write_certificate function.
+* Remove support for SSLv2, which was dropped upstream (thanks Dario Teixeira).
+* Added support for compiling under Win32 (thanks David Allsopp), see
+  README.win32.
+* Check for pthreads in configure.
+
+0.4.5 (2011-03-01)
+=====
+* Use pthread mutexes for locking thread-safe version of ssl.
+
+0.4.4 (2010-01-06)
+=====
+* Use SSL_CTX_use_certificate_chain_file instead of
+  SSL_CTX_use_certificate_file.
+* Added support for --enable-debugging configure option.
+* Don't link with unix library and don't build in custom mode.
+
+0.4.3 (2008-12-18)
+=====
+* Don't use blocking sections in finalizers since it causes segfaults (thanks
+  Grégoire Henry and Stéphane Glondu).
+
+0.4.2 (2007-03-29)
+=====
+* Added some missing blocking sections (reported by Oscar Hellström).
+
+0.4.1 (2007-02-21)
+=====
+* file_descr_of_socket is not marked as deprecated anymore.
+* Patched the Makefile to be compatible with FreeBSD (thanks Jaap Boender).
+* Explicitely link with libcrypto since we use it. Compilation should now work
+  on Mac OS X too (thanks Janne Hellsten).
+
+0.4.0 (2006-09-09)
+=====
+* Using caml_alloc_custom and Data_custom_val to access custom blocks.
+* Added set_password_callback function.
+* Integrated a big patch from Chris Waterson:
+- Added get_error_string function.
+- Read and write are not blocking anymore, use Unix.select and
+  file_descr_of_socket if you want blocking functions.
+- Fix SSL_CTX initialization to call SSL_CTX_set_mode(3) with
+  SSL_MODE_AUTO_RETRY flag. This causes SSL_read and SSL_write to "hide" the
+  SSL_ERROR_WANT_(READ|WRITE) errors that may occur during renegotiation on a
+  blocking socket.
+- Fix SSL_CTX initialization to call SSL_CTX_set_mode(3) with
+  SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER flag. This allows for a different buffer
+  address to be passed to a restarted non-blocking write operation, which is
+  useful since the OCaml garbage collector may move buffers around between
+  calls.
+- We do not need to store explicitely the file descriptor for SSL sockets.
+* Corrected checking of errors in ocaml_ssl_read (thanks Vincent Balat and
+  Nataliya Guts).
+* input_char now raises End_of_file when no byte could be read (thanks Nataliya
+  Guts).
+
+0.3.1 (2005-07-21)
+=====
+* The library is now under the LGPL licence + linking exception + linking with
+  openssl exception (see COPYING for more details).
+
+0.3.0 (2005-06-01)
+=====
+* Added Ssl_threads.init function to make the library thread-safe.
+* Put connect, accept and flush (and all other functions) in blocking_section to
+  allow other threads to run in the meantime.
+* Unified the three context creation functions in create_context, the
+  certificate to use should now be sepcified with use_certificate (sorry for the
+  API-breakage).
+* Added the get_verify_result function.
+* Using Store_field instead of Field(...) = ...
+* Using caml namespace functions.
+
+0.2.0 (2004-12-18)
+=====
+* Many thanks to Thomas Fischbacher for his patches:
+- Corrected int / val bugs when raising exceptions from C (those where found by
+  Mike Furr too, thanks).
+- Added many fonctions (but in Caml instead of C).
+* Context creation functions now take the protocol as argument.
+* Added the create_context function (for client and server connections).
+* Added functions for verifying certificates: client_verify_callback,
+  set_verify, set_verify_depth, verify.
+* The cipher now has its own type.
+* Added functions to handle ciphers: get_current_cipher, get_cipher_description,
+  get_cipher_name, get_cipher_version, set_cipher_list.
+* Added the read_certificate and load_verify_locations functions.
+* Added the open_connection_with_context and flush functions.
+* read and write functions are now thread-safe.
+* Cleaned the stubs (function prototypes, comments, etc.).
+* Updated OCamlMakefile and improved build system.
+
+0.1.0 (2004-02-05)
+=====
+* Initial release.