Old database files incompatible with 2.0

[sjfleming]

Using a cromshell1.0 all.database.tsv, seems like 1.0 uses spaces while 2.0 uses tabs to separate the header, this caused cromshell2 to error out.

There's an issue where if you used an old enough version of Cromshell 1.0, then the beginning of your submission database will be delimited by spaces rather than tabs. This will cause Cromshell 2.0 to error on any command that needs to read the database file.