Bump minor version

[ColCarroll]

Fixes #594, and brings some nice new features onto pypi.

New features

• Plot ppc supports multiple chains (Support multichain ppc in plot_ppc #526)
• Plot titles now wrap (wrap titles #441)
• plot_density uses a grid (density grid #379)
• emcee reader support (Emcee reader support #550)
• Animations in plot_ppc (add animations to plot_ppc #546)
• Optional dictionary for stat_funcs in summary (Add dictionary option for stat_funcs in summary #583)
• Can exclude variables in selections with negated variable names (negate variable names #574)

Maintenance/fixes

• Order maintained with xarray_var_iter (Maintain order of variables in xarray_var_iter #557)
• Testing very improved (multiple)
• Fix nan handling in effective sample size (Fix nan handling and fix n_eff to ess #573)
• Fix kde scaling (fix kde scaling #582)
• xticks for discrete variables (fix xticks for discrete variables #586)
• Empty InferenceData saves consistent with netcdf (Improving the behaviour of an empty InferenceData object. (Issue no 486). #577)

Deprecations

Documentation

• JOSS and Zenodo badges (Add JOSS and Zenodo badges #537)
• Gitter badge (add gitter badge #548)
• Docs for combining InferenceData (Added documentation example for combining InferenceData (#552) and also solving the issue of creaton of empty file for better behaviour with inference data(#486) #590)

[ahartikainen]

Save & read funcs are deprecated?

[ColCarroll]

Good catch -- they list v0.3.2, but weren't in those release notes. I guess we should remove them before a 0.4 release.