Allow references to pre/post variables in expressions used to set synaptic state variables.
Allow references to pre/post variables in expressions used to index synaptic state variables.
Allow references to pre/post variables in synaptic model equations
Fix use of pre/post variables with subgroups
Allow references to pre/post variables when creating synapses
Fix the template for a combination of connection mask and probability
Add an example showing the use of string expressions for spatial connectivity
Re-add the unit checking for string assignments that was accidentally removed at some point
Implement a new "int_" function, to convert booleans into integers. This should be used whenever a boolean variable is used in a multiplication, e.g. in the "unless-refractory" variables which multiply the RHS of an equation with "not_refractory". Closes #38
Merge branch 'master' into fix_pre_post_references
Merge pull request #108 from brian-team/fix_pre_post_references

Allow pre/post references in synaptic expressions
make sure that test modules are not included in test coverage
Fix threshold templates
Make PoissonGroup use the standard mechanisms -- does only support rates given as scalars or arrays for now.
Exclude Sphinx extension from test coverage measurements
Fix LaTeX representation in NeuronGroup and add tests
Add a bunch of tests (and some small fixes revealed by the tests).
Rather report the test coverage for 2.6 since we might have some classes (e.g. ordereddict) for 2.6-compatibility in our sources
Remove test that expected an error that is not actually raised
add __truediv__ and __rtruediv__