* Added wrapper to use PYTHON environment variable in tests
* Added unicode comment to default test config
* Changed config objects to use locale encoding
* Changed to use byte buffers for config (re-)writing
* Added tests for unicode sensitive tools

* Changed handling of '.use_template' to allow use of arbitrary template names
* Fixed error message for missing or wrong options
* Fixed setting ENVIRONMENT to 'DEFAULT' if set to empty in SETUP.config (see IssueID #5808)
* Added 'match' filter, allowing to use regular expression matches
* Added missing tests for 'wordwrap' filter
* Re-wrote documentation on additional Jinja filters

Changed handling of blank environment, fixed section handling on command line, cleaned up testing, added release changes

* Changed behavior if environment name is set but empty: now uses default instead of looking for '' environment
* Fixed command line handling: different variables in the same section are now all recognized (see IssueID #5501). The test cases are updated accordingly
* Re-organized test cases to group command line handling in its own class
* Added empty [namelists] section to test config, simplifying test writing
* Added CHANGES.txt for upcoming release 0.3.0, updated setup to 0.3.0dev

* Added new control variable 'EXP_OPTIONS', taking a list of config names. Options are taken from the new 'standard_options' subdirectory
* Added respective test and simplified test module

* Added setting of sectioned variables via command line, using '.' as section path separator and '..' for verbatim periods
* Added automated testing using Python's unittest library
* Disambiguated warning due to missing experiment configuration; now mentions 'experiment'.