Release v1.7.0

[BryanRumsey]

Changes

• [Fix compile w spaces #756] Added system support for folder with spaces in installation path on Linux and MacOS.
• [Reaction unit tests #770] Reaction now accept an ODE propensity function in addition to the stochastic propensity function.
• [Create Negative Timespan Example.ipynb #773] Added an example to demonstrate the correct method of using timespans with negative values.
• [Integrator options support + validation #786] ODECSolver and TauHybridCSolver now accept integrator options.
• [Build model update #797] Updates to examples.
• [Solver doc fix #817] Updated documentation.
• [Improved TauHybrid with single SSA step #829] Improved tau hybrid step selection.

Bug Fixes

• [HOTFIX: t arg in TimeSpan.arange and TimeSpan.linspace #787] TimeSpan.arange and TimeSpan.linspace now accept floats for t
• [HOTFIX: Compartment Size not Set #799] Fixed issue with SBML compartments missing the size attribute being set to nan.
• [HOTFIX: Plot Mean STDEV #820] Fixed time plotting when using Results.plot_mean_stdev.
• [HOTFIX: SBML error failure/reporting #832] Fixed error reporting when importing SBML models.
• [Fixes #837 #841] Fixed multi-firing events in the tau hybrid c solver.
• [Fix 848 #850] CLE Solver now uses model's timespan if t and increment are not provided.
• [Fix hybrid switching #853] Fixed Stochastic/Deterministic switching in the tau hybrid solvers.

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