v0.2.7

This is a version including lots of small changes from the past 18(!) years. It shall suit as a base for any further development using more modern development practices (ie. individually reviewable GitHub pull requests).

The changes in no particular order are:

• Switch build system to cmake
• Fix build to work with modern versions of WINGs & Window Maker
• Adapt window bottom to more closely resemble NeXT FileViewer
• Add support for showing available space on filesystem
• Fix recurring crashes
• Fix main window not showing title bar
• Fix building on 64 bit systems
• Fix building on FreeBSD
• Fix building on OpenBSD