Skill EXP parsing issue fix

[Trojan-V]

Apparently, Apec is unable to parse the skill exp if the percentage value goes above 1000 (if you're far beyond maxed basically). Hypixel's format looks like this above 1000: 1,000.45 (for instance).

Additionally, this takes care of an issue that spams the log file with stacktraces when the skill exp can't be parsed (when the player isn't gaining any skill exp and the skill exp display won't be displayed anymore by the server until the next skill exp are gained).

[Trojan-V]

I've edited my pull request so the readme and build.gradle file is not changed anymore. Please re-check the PR.