If you're a...
Library Maintainer
Then you should use
v26 (Lithium)
But also run your tests against
v26 (Lithium) until
v24 (Krypton) until
and
v22 (Jod) until
Website/Service Maker
Then you should use
v26 (Lithium) until
But it's OK if you use
v24 (Krypton) until
or
v22 (Jod) until
No one should use
v25
v23
v21
v20 (Iron)
v19
v18 (Hydrogen)
v17
v16 (Gallium)
v15
v14 (Fermium)
v13
v12 (Erbium)
v11
v10 (Dubnium)
v9
v8 (Carbon)
v7
v6 (Boron)
v5
v4 (Argon)
v0.12
v0.10
v0.8