updated the String class with info about the 'allow_empty' optional argument
updated the String class with info about the 'allow_empty' optional argument

guilhermefelipecgs/godot,pkowal1982/godot,guilhermefelipecgs/godot,Valentactive/godot,pkowal1982/godot,ZuBsPaCe/godot,akien-mga/godot,akien-mga/godot,godotengine/godot,godotengine/godot,firefly2442/godot,ZuBsPaCe/godot,Shockblast/godot,vkbsb/godot,pkowal1982/godot,firefly2442/godot,josempans/godot,vkbsb/godot,sanikoyes/godot,vkbsb/godot,Shockblast/godot,godotengine/godot,Valentactive/godot,pkowal1982/godot,godotengine/godot,Valentactive/godot,Valentactive/godot,pkowal1982/godot,pkowal1982/godot,sanikoyes/godot,godotengine/godot,guilhermefelipecgs/godot,Shockblast/godot,godotengine/godot,BastiaanOlij/godot,Shockblast/godot,vkbsb/godot,josempans/godot,akien-mga/godot,akien-mga/godot,josempans/godot,Zylann/godot,sanikoyes/godot,BastiaanOlij/godot,akien-mga/godot,Zylann/godot,josempans/godot,Zylann/godot,Valentactive/godot,Shockblast/godot,josempans/godot,guilhermefelipecgs/godot,Zylann/godot,josempans/godot,ZuBsPaCe/godot,Shockblast/godot,BastiaanOlij/godot,BastiaanOlij/godot,godotengine/godot,guilhermefelipecgs/godot,Valentactive/godot,Zylann/godot,ZuBsPaCe/godot,vkbsb/godot,vkbsb/godot,Zylann/godot,Shockblast/godot,pkowal1982/godot,sanikoyes/godot,ZuBsPaCe/godot,josempans/godot,sanikoyes/godot,BastiaanOlij/godot,akien-mga/godot,sanikoyes/godot,Zylann/godot,ZuBsPaCe/godot,firefly2442/godot,guilhermefelipecgs/godot,Shockblast/godot,vkbsb/godot,BastiaanOlij/godot,firefly2442/godot,akien-mga/godot,pkowal1982/godot,Zylann/godot,guilhermefelipecgs/godot,vkbsb/godot,akien-mga/godot,BastiaanOlij/godot,josempans/godot,Valentactive/godot,firefly2442/godot,firefly2442/godot,ZuBsPaCe/godot,sanikoyes/godot,Valentactive/godot,ZuBsPaCe/godot,BastiaanOlij/godot,godotengine/godot,guilhermefelipecgs/godot,firefly2442/godot,firefly2442/godot,sanikoyes/godot