Resolve conflict with upstream (#30)

* bump x.y.z version to even y prior to creation of RELEASE_3_18 branch

* bump x.y.z version to odd y following creation of RELEASE_3_18 branch

* bump x.y.z version to even y prior to creation of RELEASE_3_19 branch

* bump x.y.z version to odd y following creation of RELEASE_3_19 branch

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Co-authored-by: J Wokaty <jennifer.wokaty@sph.cuny.edu>
Co-authored-by: J Wokaty <jwokaty@users.noreply.github.com>