Python-yara

* Increase RE_MAX_AST_LEVELS from 2000 to 6000.
* BUGFIX: Buffer overrun in regexp engine (issue 678)
* BUGFIX: Null pointer dereference in regexp engine (issue 682).

Refer to the [documentation](http://yara.readthedocs.org/en/latest/gettingstarted.html#compiling-and-installing-yara) for information on how to build and install YARA.

* BUGFIX: Stack overflow caused by uncontrolled recursiveness (CVE-2017-9304)
* BUGFIX: pe.overlay.size was undefined if the PE didn't have an overlay. Now it's set to 0 in those cases.
* BUGFIX: Fix initalization issue that could cause a crash if rules compiled with a 32bit yarac is used with a 64bit yara.

Refer to the [documentation](http://yara.readthedocs.org/en/latest/gettingstarted.html#compiling-and-installing-yara) for information on how to build and install YARA.

* .NET module (Wesley Shields)
* New features for ELF module (Jacob Baines)
* Fix endianness issues (Hilko Bengen)
* Function `yr_compiler_add_fd` added to `libyara`
* `MAX_THREADS` limit can be arbitrarily increased (Emerson R. Wiley)
* Added `--fail-on-warnings` command-line option
* Multiple bug fixes

Refer to the [documentation](http://yara.readthedocs.org/en/latest/gettingstarted.html#compiling-and-installing-yara) for information on how to build and install YARA.

- Match length operator (http://yara.readthedocs.io/en/v3.5.0/writingrules.html#match-length)
- Performance improvements
- Less memory consumption while scanning processes
- Exception handling when scanning memory blocks
- Negative integers in meta fields
- Added the --stack-size command-argument
- Functions import_ordinal, is_dll, is_32bit and is_64bit added to PE module
- Functions rich_signature.toolid and rich_signature.version added to PE module
- Lots of bug fixes

Refer to the [documentation](http://yara.readthedocs.org/en/latest/gettingstarted.html#compiling-and-installing-yara) for information on how to build and install YARA.

- Short-circuit evaluation for conditions
- New yr_rules_save_stream/yr_rules_load_stream APIs.
- load() and save() methods in yara-python accept file-like objects
- Improvements to the PE and ELF modules
- Some performance improvements
- New command-line option --print-module-data
- Multiple bug fixes.

Refer to the [documentation](http://yara.readthedocs.org/en/latest/gettingstarted.html#compiling-and-installing-yara) for information on how to build and install YARA.

- Added support for negative integers and floating point numbers
- Implemented operators >,<, >=, <= for strings
- Implemented word boundary anchors (\b, \B) in regular expressions
- New features in PE module
- Math module
- New --print-namespace command line argument
- Better error handling in low memory conditions
- BUGFIX: "at" operator not working with certain strings containing wildcards
- BUGFIX: precedence of bitwise operators was incorrect
- BUGFIX: incorrect imphash result for certain PE files importing functions by ordinal
- BUGFIX: handle and memory leaks
- BUGFIX: multiple segfaults

Refer to the [documentation](http://yara.readthedocs.org/en/latest/gettingstarted.html#compiling-and-installing-yara) for information on how to build and install YARA.