DoubleX RMMV Popularized ATB Event

Lets users calls some common events at some specific atb timing

* @param pre_input_common_event_id
 * @desc Sets the common event with id pre_input_common_event_id to be called
 *       whenever a battler just becomes able to act
 *       pre_input_common_event_id must return a Number
 *       If pre_input_common_event_id doesn't return the id of an existing
 *       common event, no common event will be called with this timing
 * @default 0
 *
 * @param post_input_common_event_id
 * @desc Sets the common event with id post_input_common_event_id to be called
 *       whenever a battler just finished inputting actions
 *       post_input_common_event_id must return a Number
 *       If post_input_common_event_id doesn't return the id of an existing
 *       common event, no common event will be called with this timing
 * @default 0
 *
 * @param pre_reset_common_event_id
 * @desc Sets the common event with id pre_reset_common_event_id to be called
 *       right before resetting a battler's atb
 *       pre_reset_common_event_id must return a Number
 *       If pre_reset_common_event_id doesn't return the id of an existing
 *       common event, no common event will be called with this timing
 * @default 0
 *
 * @param post_reset_common_event_id
 * @desc Sets the common event with id post_reset_common_event_id to be called
 *       right after resetting a battler's atb
 *       post_reset_common_event_id must return a Number
 *       If post_reset_common_event_id doesn't return the id of an existing
 *       common event, no common event will be called with this timing
 * @default 0
 *
 * @param pre_update_common_event_id
 * @desc Sets the common event with id pre_update_common_event_id to be called
 *       right before running a global atb frame update
 *       pre_update_common_event_id must return a Number
 *       If pre_update_common_event_id doesn't return the id of an existing
 *       common event, no common event will be called with this timing
 * @default 0
 *
 * @param post_update_common_event_id
 * @desc Sets the common event with id post_update_common_event_id to be called
 *       right after running a global atb frame update
 *       post_update_common_event_id must return a Number
 *       If post_update_common_event_id doesn't return the id of an existing
 *       common event, no common event will be called with this timing
 * @default 0
 *
 * @help
 * The plugin file name must be the same as DoubleX_RMMV.PATB_Event_File, 
 * which must be edited by editing the plugin js file directly
 * The default value of DoubleX_RMMV.PATB_Event_File is
 * DoubleX RMMV Popularized ATB Event v000a
 *============================================================================
 *    ## Plugin Call Info                                                     
 *----------------------------------------------------------------------------
 *    # Configuration manipulations                                           
 *      1. $gameSystem.patb.param                                             
 *         - Returns the value of param listed in the plugin manager          
 *      2. $gameSystem.patb.param = val                                       
 *         - Sets the value of param listed in the plugin manager as val      
 *         - All $gameSystem.patb.param changes will be saved                 
 *============================================================================

*      v1.00b(GMT 0200 20-2-2016):                                           
 *      1. Improved this plugin's performance, readability and simplicity     
 *      v1.00a(GMT 0200 7-2-2016):                                            
 *      1. 1st completed version of this plugin finished                      
 *      v0.00b(GMT 0700 29-11-2015):                                          
 *      1. Increased this plugin's compactness                                
 *      v0.00a(GMT 0900 28-11-2015):                                          
 *      1. 1st testing version of this plugin finished

DoubleX(Optional)

*      You shall keep this plugin's Plugin Info part's contents intact       
 *      You shalln't claim that this plugin's written by anyone other than    
 *      DoubleX or his aliases                                                
 *      None of the above applies to DoubleX or his aliases