Freeflame does not generate CSV output

[ischoegl]

The following does not produce output:

# YAML file example for the `freeflame` module
# file specifies a parameter variation of the equivalence ratio
strategy:
  sequence:
    upstream.phi: { mode: linspace, limits: [0.4, 2.6], npoints: 12 }
  matrix:
    upstream.phi: { mode: linspace, limits: [0.4, 2.4], npoints: 6 }
    model.transport: ['mix', 'multi', 'soret']
defaults:
  upstream:
    T: 300. kelvin # temperature
    P: 1. atmosphere # pressure
    phi: .55 # equivalence ratio
    fuel: H2
    oxidizer: O2:1,AR:5
  model:
    mechanism: h2o2.yaml
    transport: mix
  domain:
    width: 30 millimeter # domain width
output:
  format: csv
  force: True
ctwrap: 0.3.0