Set PHP>7.3.0 and bump version to 2.0.0

package.xml

@@ -11,7 +11,7 @@
     <description>
         A PHP extension to track progress of a file upload, including details on the speed of the upload, estimated time remaining, and access to the contents of the file as it is being uploaded.
 
-        Versions 1.1.2 and up are compatible with PHP 5, PHP 7, and PHP 8.
+        Versions 1.2.0 and up are compatible with PHP 7.3+ and PHP 8.
 
         See github.com/php/pecl-php-uploadprogress for documentation and examples.
     </description>
@@ -30,7 +30,7 @@
     <date>2020-01-26</date>
     <time>18:30:00</time>
     <version>
-        <release>1.1.2</release>
+        <release>2.0.0</release>
         <api>1.0.0</api>
     </version>
     <stability>
@@ -39,7 +39,7 @@
     </stability>
     <license uri="http://www.php.net/license">PHP License</license>
     <notes>
-        - PHP 8 compatibility; this now builds on PHP 5, PHP 7, and PHP 8
+        - PHP 8 compatibility; this now builds on PHP 7.3+ and PHP 8
     </notes>
     <contents>
         <dir name="/">
@@ -58,7 +58,7 @@
     <dependencies>
         <required>
             <php>
-                <min>5.2.0</min>
+                <min>7.3.0</min>
             </php>
             <pearinstaller>
                 <min>1.4.0</min>

php_uploadprogress.h

@@ -48,7 +48,7 @@ extern "C" {
 extern zend_module_entry uploadprogress_module_entry;
 #define phpext_uploadprogress_ptr &uploadprogress_module_entry
 
-#define PHP_UPLOADPROGRESS_VERSION "1.1.2"
+#define PHP_UPLOADPROGRESS_VERSION "2.0.0"
 
 #ifdef PHP_WIN32
 #define PHP_UPLOADPROGRESS_API __declspec(dllexport)