v4.0.0

Update database table and fix some errors

- Removed fingerprint columns from polymers and solvents tables since
  they were not used
- Removed sshtunneler and remote connection since I found it was rarely
  used and could be added as an extension to the package
- Changed "csst.processor.helpers.find_index_after_sample_tune_and_load"
  to "find_index_after_x_hours". I found prviously that skipping the
  sample tune phase using the temperature program information was
  unreliable. Better to just skip a certain amount of time. Changed
  default to 5 minutes, which is what is used for the averaging function.