Bump version

5 jobs for v3.1.0 in 8 minutes and 22 seconds (queued for 1 second)
latest
Status Job ID Name Coverage
  .Pre
passed #422676
preflight

00:00:08

 
  Build
passed #422678
README.pdf

00:00:44

passed #422677
tex

00:06:56

 
  Test
passed #422680
test-pdfs

00:01:16

passed #422679
test-self

00:01:16