Add missing fields in Account.

See https://github.com/tootsuite/documentation/blob/master/Using-the-API/API.md#account

Also fixes a spurious pagination-related error.

accounts.go

@@ -25,6 +25,17 @@ type Account struct {
 	AvatarStatic   string    `json:"avatar_static"`
 	Header         string    `json:"header"`
 	HeaderStatic   string    `json:"header_static"`
+	Emojis         []Emoji   `json:"emojis"`
+	Moved          *Account  `json:"moved"`
+	Fields         []Field   `json:"fields"`
+	Bot            bool      `json:"bot"`
+}
+
+// Field is a Mastodon account profile field.
+type Field struct {
+	Name       string    `json:"name"`
+	Value      string    `json:"value"`
+	VerifiedAt time.Time `json:"verified_at"`
 }
 
 // GetAccount return Account.

mastodon.go

@@ -258,7 +258,12 @@ func getPaginationID(rawurl, key string) (ID, error) {
 		return "", err
 	}
 
-	id, err := strconv.ParseInt(u.Query().Get(key), 10, 64)
+	val := u.Query().Get(key)
+	if val == "" {
+		return "", nil
+	}
+
+	id, err := strconv.ParseInt(val, 10, 64)
 	if err != nil {
 		return "", err
 	}