change default window close button character to ■, closes #122

.gitignore

@@ -0,0 +1,4 @@
+*.*~
+~*.*
+*.swp
+*.log

changelog

@@ -1,3 +1,6 @@
+2019-05-7 - version 1.2.0
+[*] Changed default window close icon from "O" to "■"
+
 2019-03-16 - version 1.1.0
 [!] TextReader renamed to TextDisplay to avoid confusion with io.Reader. In
     library version 1.x TextReader is deprecated but still available - it is

demos/maindemo/themes/turbovision.theme

@@ -83,7 +83,7 @@ SingleBorder=─│┌┐└┘
 DoubleBorder=═║╔╗╚╝
 Edit=←→V*
 ScrollBar=░■▲▼◄►
-ViewButtons=^↓○[]
+ViewButtons=^_■[]
 CheckBox=[] X?
 Radio=() *
 ProgressBar=░▒

theme.go

@@ -138,7 +138,7 @@ func ThemeReset() {
 	defTheme.objects[ObjDoubleBorder] = "═║╔╗╚╝"
 	defTheme.objects[ObjEdit] = "←→V*"
 	defTheme.objects[ObjScrollBar] = "░■▲▼◄►"
-	defTheme.objects[ObjViewButtons] = "^↓○[]"
+	defTheme.objects[ObjViewButtons] = "^_■[]"
 	defTheme.objects[ObjCheckBox] = "[] X?"
 	defTheme.objects[ObjRadio] = "() *"
 	defTheme.objects[ObjProgressBar] = "░▒"

themes/turbovision.theme

@@ -83,7 +83,7 @@ SingleBorder=─│┌┐└┘
 DoubleBorder=═║╔╗╚╝
 Edit=←→V*
 ScrollBar=░■▲▼◄►
-ViewButtons=^↓○[]
+ViewButtons=^_■[]
 CheckBox=[] X?
 Radio=() *
 ProgressBar=░▒