SyntaxWarning: invalid escape sequence with python 3.13

[yherve]

Hi. First of all, thanks for sharing this library, it is great.

With python 3.13 I have these warnings:

/data/repo/sdwaas/smcaas-infra/src/smcaas-cli/.venv/lib/python3.13/site-packages/table2ascii/exceptions.py:37: SyntaxWarning: invalid escape sequence '\ '
  """Exception raised when the number of columns in the footer
/data/repo/sdwaas/smcaas-infra/src/smcaas-cli/.venv/lib/python3.13/site-packages/table2ascii/exceptions.py:61: SyntaxWarning: invalid escape sequence '\ '
  """Exception raised when the number of columns in the body
/data/repo/sdwaas/smcaas-infra/src/smcaas-cli/.venv/lib/python3.13/site-packages/table2ascii/exceptions.py:90: SyntaxWarning: invalid escape sequence '\ '
  """Exception raised when the number of alignments does not match
/data/repo/sdwaas/smcaas-infra/src/smcaas-cli/.venv/lib/python3.13/site-packages/table2ascii/exceptions.py:114: SyntaxWarning: invalid escape sequence '\ '
  """Exception raised when the number of column widths does not match

the fix is easy, just remove or use double backslash

Note: in the meantime, here is how to ignore these warnings:

    import warnings
    warnings.filterwarnings("ignore")