increase version number

3 jobs for v0.3.15 in 5 minutes and 51 seconds (queued for 2 seconds)
latest
Status Job ID Name Coverage
  Prepare
passed #662827
linux shell
docker

00:03:28

 
  Build
passed #662828
docker
build

00:01:49

 
  Test
passed #662829
docker
test:cargo

00:00:33