history.
    • new message kinds: "bufwrite", "completion", "list_cmd", "lua_print",
      "search_cmd", "shell_out/err/ret", "undo", "verbose", wildlist".
• |TermRequest| and |TermResponse| |event-data| is now a table. The "sequence"
  field contains the received sequence. |TermRequest| also contains a "cursor"
  field indicating the cursor's position when the sequence was received.

HIGHLIGHTS

• |TermCursorNC| is removed and no longer supported. Unfocused terminals no
  longer have a cursor.

LSP

• |vim.lsp.buf.references()|, |vim.lsp.buf.declaration()|, |vim.lsp.buf.definition()|,
  |vim.lsp.buf.type_definition()|, |vim.lsp.buf.implementation()| and
  |vim.lsp.buf.hover()| now support merging the results of multiple clients
  but no longer trigger the global handlers from `vim.lsp.handlers`
• |vim.lsp.buf.typehierarchy()| now passes the correct params for each
  client request.
• |vim.lsp.handlers.signature_help()| is no longer used.
• |vim.lsp.diagnostic.on_publish_diagnostics()| and
  |vim.lsp.diagnostic.on_diagnostic()| no longer accept a config parameter and
  can no longer be configured with |vim.lsp.with()|.
  Instead use: >lua
    vim.diagnostic.config(config, vim.lsp.diagnostic.get_namespace(client_id))
<
• |vim.lsp.util.make_position_params()|, |vim.lsp.util.make_range_params()|
  and |vim.lsp.util.make_given_range_params()| now require the `position_encoding`
  parameter.
• |vim.lsp.util.symbols_to_items()| now requires the `position_encoding` parameter.

LUA

• API functions now consistently return an empty dictionary as
  |vim.empty_dict()|. Earlier, a |lua-special-tbl| was sometimes used.
• |vim.json.encode()| no longer escapes forward slashes "/" by default

OPTIONS

• The 'statuscolumn' `%l` item can now be used as a number column segment that
  changes according to related options. It takes care of alignment, 'number',
  'relativenumber' and 'signcolumn' set to "number". The now redundant `%r` item
  is no longer treated specially for 'statuscolumn'.
• `:set {option}<` removes the local value for all |global-local| options instead
  of just string |global-local| options.
• `:setlocal {option}<` copies the global value to the local value for number
  and boolean |global-local| options instead of removing the local value.
• Setting |hidden-options| now gives an error. In particular, setting
  'noshellslash' is now only allowed on Windows.

TREESITTER

• |Query:iter_matches()| correctly returns all matching nodes in a match
  instead of only the last node. This means that the returned table maps
  capture IDs to a list of nodes that need to be iterated over. For
  backwards compatibility, an option `all=false` (only return the last
  matching node) is provided that will be removed in a future release.
• |vim.treesitter.language.get_filetypes()| always includes the {language}
  argument in addition to explicitly registered filetypes.
• |vim.treesitter.language.get_lang()| falls back to the {filetype} argument
  if no languages are explicitly registered.
• |vim.treesitter.language.add()| returns `true` if a parser was loaded
  successfully and `nil,errmsg` otherwise instead of throwing an error.
• |vim.treesitter.get_parser()| and |vim.treesitter.start()| no longer parse the
  tree before returning. Scripts must call |LanguageTree:parse()| explicitly. >lua
    local p = vim.treesitter.get_parser(0, 'c')
    p:parse()
• |vim.treesitter.get_parser()| expects its buffer to be loaded.

TUI

• OSC 52 is used as a fallback clipboard provider when no other
  |clipboard-tool| is found, even when not using SSH |clipboard-osc52|. To
  disable OSC 52 queries, set the "osc52" key of |g:termfeatures| to false.

VIMSCRIPT

• |v:msgpack_types| has the type "binary" removed. |msgpackparse()| no longer
  treats BIN, STR and FIXSTR as separate types. Any of these is returned as a
  string if possible, or a |blob| if the value contained embedded NUL:s.

==============================================================================