BUGFIX: do not enable DC guessing if not requested or conf.
Allow running more tests in the same dir, add IOError .ini not found.
TEST: add new mos models tests.
TEST: remove plot.
TEST: relax colpitts test req.
MISC: Show -i option in help.
Test for running directory.
DOC: initial doc effort.
Fix the square law mos model.
TEST: Add tests for the SL mos model.
FIX: prevent crash when time functions use default values.
Add stamp methods to diode.
MINOR: tune marker size (or remove markers) for long plots.
TEST: add a simple diode OP test.
TEST: add a voltage multiplier test.
TEST: add a 8-stages CW multiplier test.
TEST: skip diodecw8 test on Travis
BUGFIX: do not attempt to print out convergence details if the MNA is singular
EKV devices now match the usual constructor.
TEST: add ring osc. with square law mos model