added separate dev config & switched from org.json to gson to improve memory usage

config update

trying hikariconfig

async enabled

increased data fetching delay to avoid exceeding memory quota

change_id bugfix

db change_id bugfix

increased delay on fetching data from poe's api to increase performance

startup now fetches next_change_id from db

configurated db & changed some stash endpoints

test

test

test

test

test