< and > comparitors for Build class to sort by

This makes it possible to omit versionCode/versionName from a Builds: entry.

fdroid/fdroidserver#387
3 jobs for build-tools-features in 3 minutes and 47 seconds
latest
Status Job ID Name Coverage
  Test
passed #121735952
lint_format_safety_bandit_checks

00:02:37

failed #121735951
metadata_v0

00:03:47

failed #121735950
test

00:02:08

 
Name Stage Failure
failed
test Test
  CurrentVersionCode: 49


----------------------------------------------------------------------
Ran 8 tests in 1.260s

FAILED (failures=1)
localmodule: /builds/eighthave/fdroidserver
ERROR: Job failed: exit code 1
failed
metadata_v0 Test
   build: ''
buildjni: []
buildozer: false
- commit: null
+ commit: 1.4.1
disable: see maintainer notes
encoding: null
extlibs: []
ERROR: Job failed: exit code 1