For some fonts, using box-drawing characters in the representative text for computing the line height results in it being uncomfortably high. Replace them with accented capitals and tall lower-case letters which lead to a more conservative increase in the line height. Fixes #162.

Double the width returned by CTFontGetBoundingBox when drawing. Add box drawing characters for determining the line height. Call freememimage(1) for the character memimage. Fixes #18. Fixes #120. Fixes #146.

MacPorts installs osxfuse under /opt/local.

fontsrv wasn't rendering fontawesome icons, which uses the private use area around 0xf000.

Current versions of osxfuse ship with multiple versions of its kernel extension (kext) for differend versions of macOS. Running mount(1) on macOS with a current version of osxfuse fails with `don't know how to mount (no fuse)' since it fails to find the kext. Running 9pfuse(4) directly works fine. This change adds a check to mount(1) that determines: 1) which version of macOS we're running on 2) if there is an osxfuse kext available for this version of macOS

To use astro(1) and scat(1) one has to create sky/here and download various catalogue files as detailed in sky/README. This change marks those files as ignored by git so they don't clutter its status messages.