5.5.0

• likely fixed Nextcloud Gpoddersync fails
• fixed text not accepted issue in "add podcast using rss feed"
• removed kotlin-stdlib dependency to improve build speed
• cleaned out the commented-out RxJava code
• added export/import of episode progress for migration to future versions. the exported content is the same as with instant sync: all the play progress of episodes (completed or not)
• this is likely the last release of Podcini 5, sauf perhaps any minor bugfixes.
• the next Podcini overhauls the entire DB routines, SQLite is replaced with the object-based Realm, and is not compatible with version 5 and below.