- Modified the Parameters_Method_* and Method_* source files
- Modified Logging, State, Configparser and Configwriter source files
- Modified the default input file and the input files of the unit tests
- Modified the INPUT documentation

- Added IO test
- Improved OVF writer
- Added IO files of unit tests to gitignore
- Added gitkeep in IO folder of unit tests

- Added simple test for OVF IO
- Split Read_From_OVF() to smaller functions
- Modified Filter_File_Handle object
- Added new attributes and methods to Filter_File_Handle object
- Added Exception for File_reading_error
- Moved Fileformat enum class from IO to standalone header to avoid
circular dependencies in IO
- Fixed spelling mistake in Save_To_OVF() in Datawriter.cpp

…vements

- Renamed Exception
- Fixed Read_Single() call in Configparser
- Initialiaze all variables in OVF Read
- Fixed typo in Datawriter for OVF Write
- Removed some Logs from Filter_File_Handle

- Modified the API documentation
- Modified the Python API wrapping
- Added declarations for IO_Chain_Append() and IO_N_Images_In_File()
- Renamed Save_SpinChain_Configuration to
Save_Spin_Configuration_Chaing()
- Added comment for vacancies
- Small modification in IO test

- Improved IO test
- Added Require_Single() method in Filter_File_Handle

- added SPIRIT in name of corresponding VF_FileFormat
- extended OVF to OVF_bin8, OVF_bin4 and OVF_text
- added Save_to_SPIRIT() for every SPIRIT fileformat
- changed parameters to Datawriter.cpp functions for images to
vectorfield and geometry
- added comments to IO test
- improved code formating and indentation

…vements

…-code#338

- rectangular mesh
- 8byte binary
- text
- Split the data writing in different functions

- renamed Write_Spin_Configurations_Chain() to
Write_Chain_Spin_Configuration()
- added Write_SPIRIT_Version()
- implemented IO_Chain_Append()
- added comment argument in IO_Chain_Write/Append()
- comment is initialized as dash "-"
- OVF "valuedim" is now called by RequiredSingle() in Read_From_OVF()
- renamed functions IO_Write_System_*() to IO_Chain_Write_*()
- renamed function IO*System*() to IO*Image*()
- extended API IO test
- extended Python API IO test
- modified python wrapping
- modified corresponding documentation

- Implemented OVF binary 4
- OVF binary writing independently of scalar length

- Corrected comments in Datawriter for OVF
- Added all the OVF formats in the unit test

- Some switch statements converted to ifs
- Changed buffer to array when reading and writing OVF
- Changed output_comment declaration in Method_GNEB.cpp