[0.12.1] Autocomplete Improvements NVDA, Retain Clipboard on empty co…

…py, Stray Pixel Fix

<v0.12.0> #163 - Update Core Types (int -> size_t / ptrdiff_t)

- Changed core types to use size_t / ptrdiff_t.
- Methods that previously returned -1 for "none" now return std::string::npos.
- Qt render types remain as int because Qt expects int values.
- Updated Windows CMake instructions in README.md for different configurations.
- Fixed tab command type issues and a bug where the tab was not always applied.
- Fixed MinGW errors in tests
  - Using variadic functions with size_t caused issues with va_args and type casting.
  - The va_args macro can behave inconsistently on Windows.
  - Resolved by switching to a C++ initializer list.

- [v0.11.1] Regression, autoInit was invoked too late the new contruc…

…tor setup of #156

Update license headers; docs to Doxygen Awesome

 [v0.10.0] #151, Add line based QTextLayout format additions (#153)

Via edbee::LineData (LineAppendTextLayoutFormatListField). see: `edbee-lib/doc/line_data.md` for sample

[v0.9.0] #150, Add version number

- add edbee versioning number
- move onigiruma patch tools, and version set script to /tools

Initial release of the edbee source code