v1.4

CHANGES

• switch to github actions
• add a link to https://github.com/LexiFi/landmarks-starter
• split landmarks into landmarks and landmarks-ppx
• enabled instrumentation (PR #23, @nojb)
• use floatarray #24 (@nojb)
• use ppxlib instead of OMP (PR #22)
• improvements on the doc and examples (PR #15, #16, @Ostera)
• primitive support for objects (allow to annotate methods)
• dynamic landmarks
• auto now automatically benchmark all methods