!!! IMPORTANT 2.0 version before upgrade please run full backup of your site !!!

- new code structure, optimized for next development;
  - created spl_autoloader for remove includes;
  - UM classes with namespaces;
  - deprecated global $ultimatemember; variable (use UM() instead);
- new UM/WP roles logic;
- new settings class and logic (deprecated Redux framework, deprecated some old options, added some new options);
- new dependencies class for extensions;
- WP native styles for backend fields;
- new upgrades and license activations for extensions;
- new logic form backend forms and fields;
- created uninstall.php file for delete permanently all UM settings;
- optimized registration/upgrade profile process;

Deprecated Hooks:

um_new_user_registration_plain
um_user_registration_extra_hook
um_add_user_frontend
um_post_registration_global_hook
um_admin_extend_directory_options_general (was action...will be filter)

includes/class-functions.php

@@ -0,0 +1,181 @@
+<?php
+// Exit if accessed directly.
+if ( ! defined( 'ABSPATH' ) ) exit;
+
+if ( ! class_exists( 'UM_Functions' ) ) {
+
+    class UM_Functions {
+
+        var $options;
+
+
+        /**
+         * @var array variable for Flags
+         */
+        var $screenload_flags;
+
+
+        function __construct() {
+
+            $this->init_variables();
+
+        }
+
+
+        /**
+         * What type of request is this?
+         *
+         * @param string $type String containing name of request type (ajax, frontend, cron or admin)
+         *
+         * @return bool
+         */
+        public function is_request( $type ) {
+            switch ( $type ) {
+                case 'admin' :
+                    return is_admin();
+                case 'ajax' :
+                    return defined( 'DOING_AJAX' );
+                case 'cron' :
+                    return defined( 'DOING_CRON' );
+                case 'frontend' :
+                    return ( ! is_admin() || defined( 'DOING_AJAX' ) ) && ! defined( 'DOING_CRON' );
+            }
+
+            return false;
+        }
+
+
+        /**
+         * Get ajax routed URL
+         *
+         * @param string $route
+         * @param string $method
+         *
+         * @return string
+         */
+        public function get_ajax_route( $route, $method ) {
+
+            $route = str_replace( array( '\\', '/' ), '!', $route );
+            $ip = isset( $_SERVER['REMOTE_ADDR'] ) ? $_SERVER['REMOTE_ADDR'] : '';
+            $nonce = wp_create_nonce( $ip . get_current_user_id() . $route . $method );
+
+            if ( is_admin() ) {
+                $url = add_query_arg( array(
+                    'action'        => 'um_router',
+                    'um_action'     => 'route',
+                    'um_resource'   => $route,
+                    'um_method'     => $method,
+                    'um_verify'     => $nonce
+                ), get_admin_url( null, 'admin-ajax.php' ) );
+            } else if ( get_option( 'permalink_structure' ) ) {
+                $url = get_site_url( null, 'um-api/route/' . $route . '/' . $method . '/' . $nonce );
+            } else {
+                $url = add_query_arg( array(
+                    'um_page'       => 'api',
+                    'um_action'     => 'route',
+                    'um_resource'   => $route,
+                    'um_method'     => $method,
+                    'um_verify'     => $nonce
+                ), get_site_url() );
+            }
+            return $url;
+        }
+
+
+        /**
+         * Set variables
+         */
+        function init_variables() {
+            $this->options = get_option( 'um_options' );
+        }
+
+
+        function um_get_option( $option_id ) {
+            if ( isset( $this->options[ $option_id ] ) )
+                return apply_filters( "um_get_option_filter__{$option_id}", $this->options[ $option_id ] );
+
+            switch ( $option_id ) {
+                case 'site_name':
+                    return get_bloginfo( 'name' );
+                    break;
+                case 'admin_email':
+                    return get_bloginfo( 'admin_email' );
+                    break;
+                default:
+                    return '';
+                    break;
+
+            }
+        }
+
+
+        function um_update_option( $option_id, $value ) {
+            $this->options[ $option_id ] = $value;
+            update_option( 'um_options', $this->options );
+        }
+
+
+        function um_remove_option( $option_id ) {
+            if ( ! empty( $this->options[ $option_id ] ) )
+                unset( $this->options[ $option_id ] );
+
+            update_option( 'um_options', $this->options );
+        }
+
+
+        function um_get_default( $option_id ) {
+            $settings_defaults = UM()->config()->settings_defaults;
+            if ( ! isset( $settings_defaults[$option_id] ) )
+                return false;
+
+            return $settings_defaults[$option_id];
+        }
+
+
+        /**
+         * Help Tip displaying
+         *
+         * Function for render/displaying UltimateMember help tip
+         *
+         * @since  2.0.0
+         *
+         * @param string $tip Help tip text
+         * @param bool $allow_html Allow sanitized HTML if true or escape
+         * @param bool $echo Return HTML or echo
+         * @return string
+         */
+        function tooltip( $tip, $allow_html = false, $echo = true ) {
+            if ( $allow_html ) {
+
+                $tip = htmlspecialchars( wp_kses( html_entity_decode( $tip ), array(
+                    'br'     => array(),
+                    'em'     => array(),
+                    'strong' => array(),
+                    'small'  => array(),
+                    'span'   => array(),
+                    'ul'     => array(),
+                    'li'     => array(),
+                    'ol'     => array(),
+                    'p'      => array(),
+                ) ) );
+
+            } else {
+                $tip = esc_attr( $tip );
+            }
+
+            ob_start(); ?>
+
+            <span class="um_tooltip dashicons dashicons-editor-help" title="<?php echo $tip ?>"></span>
+
+            <?php if ( $echo ) {
+                ob_get_flush();
+                return '';
+            } else {
+                return ob_get_clean();
+            }
+
+        }
+
+    }
+
+}