Log Message:
xmag: update to 1.0.8.

Alan Coopersmith (11):
      gitlab CI: stop requiring Signed-off-by in commits
      Print which arguments were unknown before giving usage message
      Add -help and -version options
      Clear 9 -Wuseless-cast warnings
      Fix -Wshadow warning for Display argument to Error()
      Fix -Wself-assign warning from clang 13
      Fix -Wmissing-variable-declarations warning from clang 13
      usage: add noreturn attribute
      Quiet 64 -Wunused-parameter warnings from clang 13
      Use double for all floating point numbers, not a mix of double and float
      xmag 1.0.8