Commit add54e6c2ea46e03c2df5d7cc0f98a2463b40a7c

Patrick Steinhardt 2020-02-19T11:31:01

README: update our build matrix to reflect current releases As noted in docs/release.md, we only provide security updates for the latest two releases. Let's thus drop the build status of both v0.27 and v0.26 branches, adding the new v0.99 branch instead.