core: version each metadata type separately

It turns out to be preferable to be able to break one type without
affecting the other.

So instead of the global SpecVersion, use a separate FmtVersion for each
type. For compatibility, keep supporting spec_version fields (until next
major bump of the respective types' version).

Signed-off-by: Kim Altintop <kim@eagain.io>

1 files changed, 1 insertions, 1 deletions

diff --git a/src/cmd/drop.rs b/src/cmd/drop.rs
index 208dbd6..8051253 100644
--- a/src/cmd/drop.rs
+++ b/src/cmd/drop.rs
@@ -195,7 +195,7 @@ impl TryFrom<Editable> for metadata::Drop {
         }
 
         Ok(Self {
-            spec_version: crate::SPEC_VERSION,
+            fmt_version: Default::default(),
             description,
             prev: None,
             roles,