Noelle Leigh c8d49bda3d
Use r-strings for embedded train car art
That fixes these SyntaxWarnings:

tilde-train.py:60: SyntaxWarning: invalid escape sequence '\_'
  |  |              | |__/V\_| |
tilde-train.py:76: SyntaxWarning: invalid escape sequence '\-'
  == - /  \-/  \-----/  \-/  \ - ==
tilde-train.py:86: SyntaxWarning: invalid escape sequence '\-'
  - /  \-/  \------/  \-/  \ -
2025-06-01 20:56:06 -04:00
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