Transparently load state variables from disk in standalone scripts. Closes #177
Adapt monitors to work with the transparent state variable loading introduced in the previous commit.
Adapt tests and examples to the new transparent state variable loading in standalone.
Update the docs for the transparent variable loading in standalone.
Fix for windows
Merge pull request #272 from brian-team/standalone_read_variables

Standalone read variables
Make the `report` argument in `Network.run` do what the docs promise
Implement progress reporting for the C++ standalone. Closes #257