chore(release): bump version to 0.2.0

Minor feature release over v0.1.0 (124 commits). Highlights:
- Drop-in upstream g:vimwiki_list / g:vimwiki_* config (Vim) + global
  per-wiki defaults shorthand (both clients)
- Programmatic coc.nvim registration (no hand-written coc-settings.json)
- :NuwikiTOC / GenerateLinks / GenerateTagLinks insert at the cursor line;
  scoped :NuwikiGenerateLinks <path> wired up
- HTML export: heading id anchors, div.toc wrapper, section numbering;
  toc_header/level honoured in single-wiki config
- The full P3 config/command/mapping parity batch + R1–R18 review fixes

Bumps the workspace version, the inter-crate path-dep requirements, and
g:nuwiki_version.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

Cargo.lock

@@ -376,11 +376,11 @@ checksum = "f8ca58f447f06ed17d5fc4043ce1b10dd205e060fb3ce5b979b8ed8e59ff3f79"
 
 [[package]]
 name = "nuwiki-core"
-version = "0.1.0"
+version = "0.2.0"
 
 [[package]]
 name = "nuwiki-ls"
-version = "0.1.0"
+version = "0.2.0"
 dependencies = [
  "nuwiki-lsp",
  "tokio",
@@ -388,7 +388,7 @@ dependencies = [
 
 [[package]]
 name = "nuwiki-lsp"
-version = "0.1.0"
+version = "0.2.0"
 dependencies = [
  "async-trait",
  "dashmap 6.1.0",