Fix #70: Update autocmd name

Also fixes use of deprecated diagnostics function

Author: wbthomason

lua/lsp-status.lua

@@ -83,7 +83,7 @@ local function on_attach(client)
   messaging.register_client(client.id, client.name)
   vim.api.nvim_command('augroup lsp_aucmds')
   vim.api.nvim_command('au! * <buffer>')
-  vim.api.nvim_command('au User LspDiagnosticsChanged lua require("lsp-status/redraw").redraw()')
+  vim.api.nvim_command('au User DiagnosticChanged lua require("lsp-status/redraw").redraw()')
 
   -- If the client is a documentSymbolProvider, set up an autocommand
   -- to update the containing symbol

lua/lsp-status/diagnostics.lua

@@ -1,15 +1,15 @@
 -- Gather diagnostics
+local levels = {
+  errors = vim.diagnostic.severity.ERROR,
+  warnings = vim.diagnostic.severity.WARN,
+  info = vim.diagnostic.severity.INFO,
+  hints = vim.diagnostic.severity.HINT,
+}
+
 local function get_all_diagnostics(bufnr)
   local result = {}
-  local levels = {
-    errors = 'Error',
-    warnings = 'Warning',
-    info = 'Information',
-    hints = 'Hint'
-  }
-
   for k, level in pairs(levels) do
-    result[k] = vim.lsp.diagnostic.get_count(bufnr, level)
+    result[k] = #vim.diagnostic.get(bufnr, { severity = level })
   end
 
   return result