Fix bisection methods to return the parameter that fulfills the conditions more close to the target constrains.

Fix function find_direct_relation. Use a slice based on a chunk size instead of selecting a single time-step.
Check that the constrains are fulfilled after a binary search.

Make it possible to specify analysis options using a dictionary of thresholds or a csv string called constrains

Moving all compression content from a separate repository for clarity. enstools commit at that point was: 5107e43f4755243540369e4a6eb04222b9c6b5a