scanner: make the 1. float error a warning for now

vlib/gg/gg_darwin.c.v

@@ -8,6 +8,8 @@ fn C.darwin_draw_string(x int, y int, s string, cfg voidptr)
 
 fn C.darwin_text_width(s string) int
 
+fn C.darwin_text_width_runes(r []rune) int
+
 fn C.darwin_window_refresh()
 
 fn C.darwin_draw_rect(f32, f32, f32, f32, voidptr)

vlib/gg/gg_darwin.m

@@ -68,7 +68,6 @@ int darwin_text_width(string s) {
 	return (int)(ceil(size.width));
 }
 
-
 void darwin_draw_rect(float x, float y, float width, float height, gx__Color c) {
 	NSColor* color = nscolor(c);
 	NSRect rect = NSMakeRect(x, y, width, height);

vlib/v/scanner/scanner.v

@@ -438,7 +438,7 @@ fn (mut s Scanner) ident_dec_number() string {
 				s.pos--
 			} else {
 				// 5.
-				s.error('float literals should have a digit after the decimal point, e.g. `5.0`')
+				s.warn('float literals should have a digit after the decimal point, e.g. `5.0`')
 			}
 		}
 	}

vlib/v/scanner/tests/float_literals_dot_err.out

@@ -1,4 +1,4 @@
-vlib/v/scanner/tests/float_literals_dot_err.vv:2:9: error: float literals should have a digit after the decimal point, e.g. `5.0`
+vlib/v/scanner/tests/float_literals_dot_err.vv:2:9: warning: float literals should have a digit after the decimal point, e.g. `5.0`
     1 | fn main() {
     2 |     a := 1.
       |            ^