Export nip28 functions in index.ts and bump version (#265)

index.ts

@@ -16,6 +16,7 @@ export * as nip21 from './nip21.ts'
 export * as nip25 from './nip25.ts'
 export * as nip26 from './nip26.ts'
 export * as nip27 from './nip27.ts'
+export * as nip28 from './nip28.ts'
 export * as nip39 from './nip39.ts'
 export * as nip42 from './nip42.ts'
 export * as nip57 from './nip57.ts'

package.json

@@ -1,6 +1,6 @@
 {
   "name": "nostr-tools",
-  "version": "1.13.1",
+  "version": "1.13.2",
   "description": "Tools for making a Nostr client.",
   "repository": {
     "type": "git",