update common interface

[ChrisRackauckas]

This updates the common interface to the new specs for DiffEqBase.jl's v0.15.0. It is incompatible with previous versions.

[ChrisRackauckas]

I'm not sure what that load path stuff was in the tests, but that was required to be removed for tests to pass, and definitely would be required on CI.

[coveralls]

Changes Unknown when pulling a85fa99 on update_ into ** on master**.

[codecov-io]

Codecov Report

❗ No coverage uploaded for pull request base (master@50586e1). Click here to learn what that means.
The diff coverage is 91.11%.

@@            Coverage Diff            @@
##             master      #19   +/-   ##
=========================================
  Coverage          ?   87.04%           
=========================================
  Files             ?        4           
  Lines             ?      193           
  Branches          ?        0           
=========================================
  Hits              ?      168           
  Misses            ?       25           
  Partials          ?        0

Impacted Files	Coverage Δ
src/common.jl	89.42% <91.11%> (ø)

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[ChrisRackauckas]

Cool. Tests pass. Would you be fine with a release after merging? I think there may be a nonlocality bug in the package resolver which is having LSODA cause some issues:

https://discourse.julialang.org/t/differentialequations-pkg-wont-be-added/3194/22

[rveltz]

For the tag, I am OK if it can help you.

[ChrisRackauckas]

Cool thanks. Do you want me to tag or do you want to do it?

[rveltz]

Please do it, I have never done it.

Thank you.

[ChrisRackauckas]

The METADATA PR is in. JuliaLang/METADATA.jl#8847

Note that I will likely have another PR come in by the end of the week. It will be a small PR to the common interface which will just modify the type that things are saved to. That will be the last change for DifferentialEquations.jl ecosystem version 2.0, and so things will go stable again (I just wanted all of the changes in before the JuliaCon workshop!)