disable integrator.do_species_clip by default

it seems to cause more problems then it fixes

Author: zingale

Docs/source/ode_integrators.rst

@@ -275,9 +275,11 @@ constraint on the intermediate states during the integration.
   The default is ``1.e-30``.
 
 * ``integrator.do_species_clip`` : this enforces that the mass fractions
-  all in $[\mathtt{SMALL\_X\_SAFE}, 1.0]$.
+  all in $[\mathtt{SMALL\_X\_SAFE}, 1.0]$ before calling the network righthand
+  side function.
 
-  This is enabled by default.
+  This is off by default.  Turning this on can sometimes make the integrator
+  work a lot harder.
 
 
 

integration/_parameters

@@ -91,7 +91,7 @@ retry_atol_enuc                real      -1
 
 # in the clean_state process, do we clip the species such that they
 # are in [0, 1]?
-do_species_clip              bool         1
+do_species_clip              bool         0
 
 # flag for turning on the use of number densities for all species
 use_number_densities     bool     0