Made class final
Made Lists into ImmutableLists - where possible

+ Made class final
Made class final
Made Lists into ImmutableLists -where possible

+ Made class final
Added NPE catch block for player UUID check

+ Made class final
Made List into ImmutableList where possible
Made Lists into ImmutableLists -where possible
Made class final
Made class final
Removed redundant null check
Made variables final where possible
Moved '/ggm view' argument handling to View.java

Finished! :joy: