Changes since 1.6.1:
- Nullify userdata also in SASetupUtf8Hooks
- Test suite enhancements
- CMake: no longer use CTest and add manual BUILD_TESTING option instead (default to ON)
- Prefer tagged version of Google Benchmark
- dbfcreate: allow creation of Date and Logical fields #167 (#168)
- Fix cppcheck nullPointerOutOfMemory warnings
- DBFWriteAttribute(): return true when no precision loss occured when writing a double
- SHPCreateLL()/DBFCreate(): make error message contains full filename (in case it is very long)