Textual curves containing hyphens (like date-times) are split on parsing

[kinverarity1]

Describe the bug
When a column is separated by a hyphen, the substitution that I put in lasio to deal with very old-fashioned fixed-width Fortran-style formatted columns causes hell. Example file from here: https://github.com/ariewjy/triple_combo_web_plotter/files/8575670/time_dummy_example.zip

To Reproduce

>>> las = lasio.read('''
~VERSION INFORMATION 
 VERS. 2.0: CWLS LOG ASCII STANDARD -VERSION 2.0 
 WRAP.  No: SINGLE LINE PER DEPTH STEP
~WELL INFORMATION BLOCK 
 STRT.DD/MM/YYYY-HH:MM:SS 03/09/2021-00:00:00                         : Start Time
 STOP.DD/MM/YYYY-HH:MM:SS 03/09/2021-00:00:15                         : Stop Time
 STEP.S                   5.00                                        : Step  Time
 NULL.                    -999.25                                     : Null value
~CURVE INFORMATION
TIME.DD/MM/YYYY-HH:MM:SS                     :   0 Date
BITDEP.ft                                    :   1 Bit Measured Depth
BLOCKCOMP.ft                                 :   2 Block/Topdrive Position Compensated
ROP_AVG.ft/hr                                :   3 Time Averaged ROP
~O
~A
  03/09/2021-00:00:00             76.8             16.3              0.0
  03/09/2021-00:00:05             76.7             16.3              0.0
  03/09/2021-00:00:10             76.8             16.3              0.0
  03/09/2021-00:00:15             76.9             16.3              0.0
''')
>>> print(las.df())
               BITDEP  BLOCKCOMP  ROP_AVG  UNKNOWN
TIME                                              
03/09/2021  -00:00:00       76.8     16.3      0.0
03/09/2021  -00:00:05       76.7     16.3      0.0
03/09/2021  -00:00:10       76.8     16.3      0.0
03/09/2021  -00:00:15       76.9     16.3      0.0

Expected behavior
Output from above should be:

                      BITDEP  BLOCKCOMP  ROP_AVG
TIME                                              
03/09/2021-00:00:00       76.8     16.3      0.0
03/09/2021-00:00:05       76.7     16.3      0.0
03/09/2021-00:00:10       76.8     16.3      0.0
03/09/2021-00:00:15       76.9     16.3      0.0

Software versions (please complete the following information):

• lasio v0.30

Additional context
See here: ariewjy/triple_combo_web_plotter#16

[kinverarity1]

Fixed by #530