Log Message:
st-term: Update x11/st-term to 0.8

Changes:
0.8
---
There are many features and code that has been rewritten. Particulary
noteworthy is now a more clear separation of the X11/Xft code and the terminal
emulator logic.

Some peole have shown interest in writing a Wayland port, writing specific
(fuzz) tests for the terminal emulator or reusing the terminal emulator code.