docs: update changelog and header for version v1.3.98

CHANGELOG.md

@@ -1,5 +1,13 @@
 # Changelog
 
+## [1.3.98] - 2025-02-28
+### Changed
+- update platformio.ini for version v1.3.98
+- migrate from SPIFFS to LittleFS for file handling
+- remove unused VSCode settings file
+- remove commented-out spoolman and filaman data from api.cpp
+
+
 ## [1.3.97] - 2025-02-28
 ### Added
 - füge Bestätigungsmeldung für Spool-Einstellung hinzu

platformio.ini

@@ -9,7 +9,7 @@
 ; https://docs.platformio.org/page/projectconf.html
 
 [common]
-version = "1.3.97"
+version = "1.3.98"
 ##
 [env:esp32dev]
 platform = espressif32