documentation: Adds versioning information.

Adds version information for applications, functions,
and manager events/actions.

This is not completely exhaustive by any means but
covers most new things added that have release
versioning information in the issue tracker.

ASTERISK-29940 #close

Change-Id: I506401e93c799715dbbe97c0a8ba18af2bf5e131

funcs/func_channel.c

@@ -64,6 +64,11 @@
 		</description>
 	</function>
 	<function name="CHANNEL_EXISTS" language="en_US">
+		<since>
+			<version>16.22.0</version>
+			<version>18.8.0</version>
+			<version>19.0.0</version>
+		</since>
 		<synopsis>
 			Checks if the specified channel exists.
 		</synopsis>

funcs/func_env.c

@@ -291,6 +291,11 @@
 		</see-also>
 	</function>
 	<function name="BASENAME" language="en_US">
+		<since>
+			<version>16.21.0</version>
+			<version>18.7.0</version>
+			<version>19.0.0</version>
+		</since>
 		<synopsis>
 			Return the name of a file.
 		</synopsis>
@@ -309,6 +314,11 @@
 		</see-also>
 	</function>
 	<function name="DIRNAME" language="en_US">
+		<since>
+			<version>16.21.0</version>
+			<version>18.7.0</version>
+			<version>19.0.0</version>
+		</since>
 		<synopsis>
 			Return the directory of a file.
 		</synopsis>

funcs/func_frame_drop.c

@@ -38,6 +38,11 @@
 
 /*** DOCUMENTATION
 	<function name="FRAME_DROP" language="en_US">
+		<since>
+			<version>16.21.0</version>
+			<version>18.7.0</version>
+			<version>19.0.0</version>
+		</since>
 		<synopsis>
 			Drops specific frame types in the TX or RX direction on a channel.
 		</synopsis>

funcs/func_json.c

@@ -39,6 +39,11 @@
 
 /*** DOCUMENTATION
 	<function name="JSON_DECODE" language="en_US">
+		<since>
+			<version>16.24.0</version>
+			<version>18.10.0</version>
+			<version>19.2.0</version>
+		</since>
 		<synopsis>
 			Returns the string value of a JSON object key from a string containing a
 			JSON array.

funcs/func_math.c

@@ -109,6 +109,11 @@
 		</description>
 	</function>
 	<function name="MIN" language="en_US">
+		<since>
+			<version>16.19.0</version>
+			<version>18.5.0</version>
+			<version>19.0.0</version>
+		</since>
 		<synopsis>
 			Returns the minimum of two numbers.
 		</synopsis>
@@ -123,6 +128,11 @@
 		</description>
 	</function>
 	<function name="MAX" language="en_US">
+		<since>
+			<version>16.19.0</version>
+			<version>18.5.0</version>
+			<version>19.0.0</version>
+		</since>
 		<synopsis>
 			Returns the maximum of two numbers.
 		</synopsis>
@@ -137,6 +147,11 @@
 		</description>
 	</function>
 	<function name="ABS" language="en_US">
+		<since>
+			<version>16.19.0</version>
+			<version>18.5.0</version>
+			<version>19.0.0</version>
+		</since>
 		<synopsis>
 			Returns absolute value of a number.
 		</synopsis>

funcs/func_sayfiles.c

@@ -42,6 +42,11 @@
 
 /*** DOCUMENTATION
 	<function name="SAYFILES" language="en_US">
+		<since>
+			<version>16.21.0</version>
+			<version>18.7.0</version>
+			<version>19.0.0</version>
+		</since>
 		<synopsis>
 			Returns the ampersand-delimited file names that would be played by the Say applications (e.g. SayAlpha, SayDigits).
 		</synopsis>

funcs/func_scramble.c

@@ -32,6 +32,11 @@
 
 /*** DOCUMENTATION
 	<function name="SCRAMBLE" language="en_US">
+		<since>
+			<version>16.21.0</version>
+			<version>18.7.0</version>
+			<version>19.0.0</version>
+		</since>
 		<synopsis>
 			Scrambles audio on a channel.
 		</synopsis>

funcs/func_strings.c

@@ -155,6 +155,11 @@ AST_THREADSTORAGE(tmp_buf);
 		</description>
 	</function>
 	<function name="STRBETWEEN" language="en_US">
+		<since>
+			<version>16.21.0</version>
+			<version>18.7.0</version>
+			<version>19.0.0</version>
+		</since>
 		<synopsis>
 			Inserts a substring between each character in a string.
 		</synopsis>

funcs/func_talkdetect.c

@@ -42,6 +42,9 @@
 
 /*** DOCUMENTATION
 	<function name="TALK_DETECT" language="en_US">
+		<since>
+			<version>12.4.0</version>
+		</since>
 		<synopsis>
 			Raises notifications when Asterisk detects silence or talking on a channel.
 		</synopsis>