0.15.dev must not be used after 0.15b or 0.15rc.
According to PEP 440, <major>.<minor>.dev must be sorted before <major>.<minor><pre>.dev. As we agreed on default releaselevel "beta" for development, the ".dev" suffix should not be used without a pre-release segment for Docutils versions.
Authored by: milde 2017-08-18
Parent: [r8172]
Child: [r8174]