Update denops_core to v0.16.0

Author: lambdalisue

deps.ts

@@ -5,11 +5,11 @@ export * as fs from "https://deno.land/std@0.95.0/fs/mod.ts";
 export type {
   Context,
   Dispatcher,
-} from "https://deno.land/x/denops_core@v0.13.0/mod.ts";
+} from "https://deno.land/x/denops_core@v0.16.0/mod.ts";
 export {
   Denops,
   ensureArray,
   ensureNumber,
   ensureRecord,
   ensureString,
-} from "https://deno.land/x/denops_core@v0.13.0/mod.ts";
+} from "https://deno.land/x/denops_core@v0.16.0/mod.ts";