Version 0.3.3
* Reset *key_file to NULL after free

Version 0.3.2
* Bugfix for merging empty configuration files

Version 0.3.1
* Bugfix for writing files (Set delimiter in readFile)

Version 0.3.0
* New parser
* Add econf_get*ValueDef functions

Version 0.2.0
* Reading of files is stable now

Version 0.1.0
* Initial release
