Minor progress in the union-find formalization.
Minor progress in the union-find formalization.

(Still struggling with inductives.)

hoheinzollern/FStar,FStarLang/FStar,FStarLang/FStar,YaccConstructor/FStar,YaccConstructor/FStar,MallabaevAzamat/FStar,YaccConstructor/FStar,MallabaevAzamat/FStar,FStarLang/FStar,hoheinzollern/FStar,A-Manning/FStar,MallabaevAzamat/FStar,hoheinzollern/FStar,MallabaevAzamat/FStar,YaccConstructor/FStar,A-Manning/FStar,A-Manning/FStar,hoheinzollern/FStar