Fix predict with confidence interval

[nalimilan]

DataFrames aren't a dependency anymore.

Fixes #159. Covered by tests at JuliaStats/GLM.jl#335 (we should add tests with a dummy model type at some point).

[kleinschmidt]

Weird how this snuck in; I guess the predict PRs were opened while #71 was still being finalized and didn't touch any of the same code so I didn't notice. We really ought to have tests for this though, could you add some?

[nalimilan]

Weird how this snuck in; I guess the predict PRs were opened while #71 was still being finalized and didn't touch any of the same code so I didn't notice.

Yes that seems to be what happened with #81.

We really ought to have tests for this though, could you add some?

JuliaStats/GLM.jl#335 adds tests in GLM. I'll have a look at adding tests here.

[codecov-io]

Codecov Report

Merging #160 into master will increase coverage by 1.2%.
The diff coverage is 66.66%.

@@            Coverage Diff            @@
##           master     #160     +/-   ##
=========================================
+ Coverage   83.66%   84.87%   +1.2%     
=========================================
  Files           9        9             
  Lines         496      496             
=========================================
+ Hits          415      421      +6     
+ Misses         81       75      -6

Impacted Files	Coverage Δ
src/statsmodel.jl	86.44% <66.66%> (+10.16%)	⬆️

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[nalimilan]

OK, tests added!

[kleinschmidt]

Oh and bump the patch version?

[nalimilan]

Done.