classy passed to pep8 standards
added a test suite for class/classy
fixed bug in reading prec params q_linestep_trans, q_logstep_trans, affecting runs with cl_ref.pre
fixed little bug in thermoduynamics, problem when neglect_CMB_sources_below_visibility was too low
updated the flat rescaling approximation
Merge branch 'devel' of https://github.com/baudren/class into devel

* 'devel' of https://github.com/baudren/class:
  fixed little bug in thermoduynamics, problem when neglect_CMB_sources_below_visibility was too low
improved time cut approximation
Tentative Wrap of CosmoHammer
improved and updated multipole cut approximation
Merge branch 'devel' of https://github.com/baudren/class into devel

* 'devel' of https://github.com/baudren/class:
  Tentative Wrap of CosmoHammer
add boundary value for communication
revised k and q sampling. Works well but last step needed: trap+spli in closed in spectra
index_q_closed defined, transfer_get_q_list() moved up
improved q-sampling and integration along q; added temperature decomposition (sw, isw...)
Merge branch 'devel' of https://github.com/baudren/class into devel

* 'devel' of https://github.com/baudren/class:
  add boundary value for communication
ignore more files in python directory
corrected bug in isw-sw decomposition
Merge branch 'devel' of https://github.com/baudren/class into devel

* 'devel' of https://github.com/baudren/class:
  ignore more files in python directory
corrected further errors in sw-isw decomposition
corrected even more errors in sw-isw decomposition