Update config of asymptote

config.asy

@@ -1,4 +1,5 @@
 import settings;
+
 dir = "/usr/share/asymptote/";
 settings.outformat = "pdf";
 //settings.tex = "pdflatex";

lib_jl.asy

@@ -1,3 +1,8 @@
+usepackage("amsmath,amssymb");
+usepackage("inputenc","utf8");
+usepackage("icomma");
+usepackage("esvect");
+
 import graph_pi;
 import graph3;
 import gm_probabilitytree;