need to use SARAH[OutputDirectory] in SARAH > 4.0.3
rename function names for generalization
add getter for input parameters
feature: support LHInput[p] macro in constraints

In a constraint of the form

  LowScaleConstraint = {
     {p, LHInput[p]}
  };

reads the parameter `p' from the les Houches file and sets p.
adding new model file for testing the LHInput macro
update changelog
create two_scale.mk module to put the split source files into
Bugfix: constrain time for simplification of beta functions
update changelog
Merge branch 'master' into split-rges
adding template file for the one- and two-loop soft beta function module
Bugfix: convert indices to C convention in the EWSB eqs.
update ChangeLog
Merge branch 'master' into split-rges
create one compilation unit for each beta function
fill the beta function modules with the expressions and traces
adding declarations of single beta functions
store traces in the parameter classes to avoid redundant calculations
replace date and time
put SARAH trace conversions into WriteRGEClass[]