added changelog

CHANGELOG.md

+# Changelog
+
+All notable changes to this project will be documented in this file.
+
+The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
+and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
+
+## [Unreleased]
+
+### Added
+
+- Changelog
+- InfluxDB node-type
+- Support for "add" / "any" path register modes
+
+### Fixed
+
+- Netem support is working again
+
+### Changed
+
+- `villas-pipe` now automatically generates correct seqeunce numbers
+
+## [0.4.5] - 2017-09-24
+
+### Fixed
+
+- RPM packaging to include debug symbols in `-debuginfo` package
+
+## [0.4.4] - 2017-09-24
+
+### Fixed
+
+- Invalid sequence numbers due to broken workaround
+
+## [0.4.3] - 2017-09-24
+
+### Changed
+
+- Do not abort execution of socket node fails with `sendto: invalid argument`
+
+### Fixed
+
+- Several fixes for the mux / demux re-mapping feature
+
+## [0.4.2] - 2017-09-19
+
+### Fixed
+
+- Improved stability of HTTP API
+
+## [0.4.1] - 2017-09-16
+
+## [0.4.0] - 2017-09-16
+
+### Added
+
+- API action to request status of node
+- Javascript configuration example
+- Pluggable IO format subsystem with plugins for:
+  - `csv`: Comma-separated values
+  - `json`: Javascript Object Notation
+  - `raw`: 8/16/32/64 but binary floating point and integer data
+  - `villas-human`: VILLAS human-readable format
+  - `villas-binary`: VILLAS binary wire protocol
+
+## [0.3.5] - 2017-08-10
+
+### Added
+
+- API action to restart node with new configuration
+- API action to terminate node
+
+### Fixed
+
+- VILLASnode compiles now on Ubuntu 16.04
+
+## [0.3.4] - 2017-07-28
+
+### Fixed
+
+- Several compiler warnings on CLang
+
+## [0.3.3] - 2017-07-14
+
+### Changed
+
+- Paths do not require output nodes anymore
+
+### Added
+
+- Loopback node-type
+
+### Fixed
+
+- OPAL-RT AsyncIP model for RT-LAB 11.1.x
+
+## [0.3.2] - 2017-07-07
+
+### Added
+
+- Signal generator node-type
+- Valgrind test cases
+
+## [0.3.1] - 2017-06-29
+
+### Added
+
+- ZeroMQ node-type
+- nanomsg node-type
+- Multicast support for socket node-type
+- RTDS GTNET-SKT examples
+
+## [0.3.0] - 2017-05-08
+
+
+Major changes in all parts of the software
+
+### Added
+
+- Pluggable node-types with plugins for:
+  - `file`: File / Log recording & replay
+  - `fpga`: VILLASfpga interface to Xilinx VC707 FPGA board via PCIexpress
+  - `ngsi`: FI-WARE NGSI-10 Open RESTful API for Orion Context Broker
+  - `websocket`: WebSocket support for VILLASweb
+  - `socket`: BSD network sockets
+  - `shmem`: POSIX shared memory
+- Web-mockup for demonstration of the `websocket` node-type
+
+### Removed
+
+- User documentation has been moved to separate repository: http://git.rwth-aachen.de/VILLASframework/Documentation
+
+## [0.2.0] - 2015-09-22
+
+### Added
+
+- OPAL-RT RT-LAB example demonstrating usage of AsyncIP
+- Scripts and configuration files for creating LiveUSB Fedora images
+- Travis-CI configuration
+- More user documentation
+
+## [0.1.0] - 2014-06-10
+
+### Added
+
+- Doxygen is now used to build documentation