Bump DUK_VERSION for 2.0.0 release
Bump DUK_VERSION for 2.0.0 release

markand/duktape,svaarala/duktape,harold-b/duktape,markand/duktape,harold-b/duktape,markand/duktape,harold-b/duktape,markand/duktape,svaarala/duktape,harold-b/duktape,svaarala/duktape,svaarala/duktape,harold-b/duktape,harold-b/duktape,markand/duktape,svaarala/duktape,markand/duktape,svaarala/duktape,harold-b/duktape,markand/duktape,svaarala/duktape,markand/duktape,svaarala/duktape,harold-b/duktape,svaarala/duktape,markand/duktape,harold-b/duktape,markand/duktape,harold-b/duktape