get rid of nonsense test
fix toy source code
fix checksums related to toy
Merge pull request #880 from boegel/fix_toy_sources

fix toy source code
enhance Enhanced testcase
Merge pull request #884 from boegel/enhance_enhancedtestcase

enhance Enhanced testcase
Merge branch 'develop' into cleanup_build_options
update vsc-base
use FrozenDictKnownKeys rather than ConstantDict, adjust unit tests accordingly
fix module_generator unit tests, reinitialize config where needed
fix easyconfig unit tests, implement standard setUp and tearDown in EnhancedTestCase
minor import cleanup
add super calls for setUp/tearDown in asyncprocess, config unit tests; extend setUp/tearDown in EnhancedTestCase
clean up and fix easyblock unit tests
add super calls for setUp/tearDown in filetools & github unit tests
add super calls for in remaining unit test modules, clean up imports