Fixed the registration of new apps as well as url of statuses is now an Option<String> (#23)

* Changes IDs to Strings for compliance with APIv1

* - Changed Scope to Scopes to coencide with a quirk of the Mastodon API. Initial registration of the app asks for "Scopes" and authorization asks for "Scope"
- Swapped spaces for urlencoded spaces in the scopes serde definition to prevent broken links
- url of status is returned as a Map not a string"

* Fixed tests and updated Version number

* Fixed tests and verified now... learning experience

src/entities/status.rs

@@ -12,7 +12,7 @@ pub struct Status {
     /// A Fediverse-unique resource ID.
     pub uri: String,
     /// URL to the status page (can be remote)
-    pub url: String,
+    pub url: Option<String>,
     /// The Account which posted the status.
     pub account: Account,
     /// The ID of the status this status is replying to, if the status is