Add `"player"` segment data

powerline/config_files/themes/ascii.json

@@ -20,6 +20,16 @@
 				"ellipsis": "..."
 			}
 		},
+		"player": {
+			"args": {
+				"state_symbols": {
+					"fallback": "",
+					"play":     ">",
+					"pause":    "~",
+					"stop":     "X"
+				}
+			}
+		},
 
 		"line_current_symbol": {
 			"contents": "LN "

powerline/config_files/themes/powerline.json

@@ -23,6 +23,16 @@
 		"line_current_symbol": {
 			"contents": " "
 		},
+		"player": {
+			"args": {
+				"state_symbols": {
+					"fallback": "♫",
+					"play":     "▶",
+					"pause":    "▮▮",
+					"stop":     "■"
+				}
+			}
+		},
 
 		"time": {
 			"before": "⌚ "

powerline/config_files/themes/unicode.json

@@ -19,6 +19,16 @@
 				"ellipsis": "⋯"
 			}
 		},
+		"player": {
+			"args": {
+				"state_symbols": {
+					"fallback": "♫",
+					"play":     "▶",
+					"pause":    "▮▮",
+					"stop":     "■"
+				}
+			}
+		},
 
 		"line_current_symbol": {
 			"contents": "␤ "

powerline/config_files/themes/unicode_terminus.json

@@ -23,6 +23,16 @@
 		"line_current_symbol": {
 			"contents": "␤ "
 		},
+		"player": {
+			"args": {
+				"state_symbols": {
+					"fallback": "♫",
+					"play":     "▶",
+					"pause":    "▮▮",
+					"stop":     "■"
+				}
+			}
+		},
 
 		"time": {
 			"before": ""

powerline/config_files/themes/unicode_terminus_condensed.json

@@ -24,6 +24,16 @@
 		"line_current_symbol": {
 			"contents": "␤"
 		},
+		"player": {
+			"args": {
+				"state_symbols": {
+					"fallback": "♫",
+					"play":     "▶",
+					"pause":    "▮▮",
+					"stop":     "■"
+				}
+			}
+		},
 
 		"time": {
 			"before": ""