conjunctions.py crash

[teridon]

I changed the start and end dates and it crashes almost immediately:

$ python3 conjunctions.py
Looking for planetary events between 2018-01-01 and 2021-01-01:

Traceback (most recent call last):
  File "conjunctions.py", line 658, in <module>
    run(start, end, observer, toolate, output_format)
  File "conjunctions.py", line 556, in run
    observer.date, sep)
  File "conjunctions.py", line 298, in add
    self.clist.delete(cc)
AttributeError: 'list' object has no attribute 'delete'

[akkana]

Oops! Should be fixed now.