change default size to be more accurate

src/configman.cr

@@ -14,7 +14,7 @@ module Funfriend::ConfigMan
 
   DEFAULT_CONFIG = {
     "window" => {
-      "funfriend_size" => 64.as(ConfigValue)
+      "funfriend_size" => 75.as(ConfigValue)
     },
     "sound" => {
       "volume" => 0.2.as(ConfigValue)

src/vec2.cr

@@ -153,11 +153,11 @@ module Funfriend
       self.x != other.x || self.y != other.y
     end
 
-    def to_s
-      "(#{x}, #{y})"
+    def to_s(io : IO)
+      io << "(#{x}, #{y})"
     end
-    def inspect
-      "(x: #{x.inspect}, y: #{y.inspect})"
+    def inspect(io : IO)
+      io << "(x: #{x.inspect}, y: #{y.inspect})"
     end
 
     def self.zero