Merge pull request #33 from robclewley/develop

Develop
Run tests in parallel and use boxed subprocesses
Make example Python 3 compatible

[ci skip]
Improved unpickling error message
Fixed import of IsUniqueSeq
Finally (?) fix annoying bug in Clang 64-bit environments
Fix assert failure on 64-bit systems
Stop using parallel test runs

To avoid false failure due to concurrency
Turn on Dopri/Radau tests on Python 3/64-bit

It seems, commit c39de94 fixed #26.
Fix compilers' (gcc, clang) warnings
Do not use sandboxes when collect coverage stats
Run tests in parallel and use boxed subprocesses
Make example Python 3 compatible

[ci skip]
Improved unpickling error message
Fixed import of IsUniqueSeq
Merge branch 'master' of https://github.com/robclewley/pydstool

Conflicts:
	pytest.ini