v1.1.2 Fixes to some build issues

Includes fixes for some issues found testing on some Linux systems. Also supports building a Median version (Medianx) without needing to install Cfitsio (although this cannot read or write FITS files). If users have not installed the glslc compiler, the release now includes pre-compiled .spv files and these can be used instead of building from source. (But without the glslc compiler it is not possible to experiment with changes to the GLSLC GPU code.)

• Adder: Vulkan setup diagnostics now better match those from Metal.
• Compiled GLSLC files (.spv) no longer deleted by Makefile target 'clean'.
• New Vulkan Makefile target 'cleanup' deletes all built files including .spv files.
• Compiled .spv files now included in release.
• The Vulkan Framework code no longer reads instance extension properties unless it needs to, as this can slow the program.
• Extended header comments added to Median GPU code files.

v1.1.1 Minor bug fixes

Fixes some issues that showed up testing on different Linux systems, including:

• An error in the Ubuntu installation instructions that omitted the SPIR-V tools package.
• Need for -lpthreads for linking on some older systems.
• Testing for some memory properties using flags undefined on some systems.
• A crash of the Mandel example in CPU mode on a CPU that supported more than 64 threads.

v1.1.0 Release with Windows support

This release adds support for building on Windows, using the Visual Studio tools like cl and nmake in a terminal window.

v1.0.0 First complete release

The first full release of the ADASS tutorial example programs.

v0.0.9 Preliminary release

Should have all program files in almost final state, but is still missing proper release notes and installation instructions.