## Problem
Commit 0f27488 changed fugitive and neogit integrations from enabled by
default
to disabled by default. Users who never explicitly set these keys in
their config
saw no deprecation notice and silently lost integration support. The
existing
deprecation warning only fires for the old `filetypes` key, missing the
far more
common case of users who had no explicit config at all.
## Solution
Add an ephemeral migration check in `init()` that emits a `vim.notify`
warning
at WARN level when `fugitive`, `neogit`, and `diff` (via
`extra_filetypes`) are
all absent from the user's config. This covers the gap between the old
`filetypes`
deprecation and users who relied on implicit defaults. To be removed in
0.3.0.
cb38865b96