Fix syms in plots

Merge pull request #96 from isaacsas/discretefunction-fix

DiscreteFunction creation fix

ODE and Parameter Jacobians

Merge pull request #94 from isaacsas/appveyor-fix

allow failures on appveyor for Julia nightly

label species in plots and prevent negative sqrt in SDEs

Merge pull request #90 from isaacsas/use-discretefunctions

add DiscreteProblem overload for reaction_networks

kwargs to control jump creation and fix for mixed jump systems

Merge pull request #84 from isaacsas/mixed-jumps-fix

missing jumps fix

deferred network construction with min_reaction_network macro

Merge pull request #76 from isaacsas/reexport-diffeqbase

add reexport of DiffEqBase

Bug fixes and support for more SSAs

Fixes symbolic Jacobian expressions and use of parameter expressions in SSAs.

Adds defaults for Hill and MM repressor functions.

Allows the use of the RSSA for simulating jumps.

Patch vector initialization for v1.0

Merge pull request #62 from isaacsas/depgr-v1-fix

fix vector initialization for 1.0

v1.0

v3.4.0

Update .travis.yml

v0.7 final

v3.3.1

Update problem.jl

Fix imports and deprecate default

Merge pull request #57 from Gaussia/depricate_default

Depricate default