1. Add option to enable/disable recent file list:
By clicking "File->Recent File List->Settings" menu, user can enable/disable Recent File List generating, as well as clearing existing Recent File List

2. Add option to enable/disable quit prompt:
User can check option of "Disable quit prompt" on quit dialogue to avoid this window appear next time.

User can enable it again at Help->Quick Start Guide menu.
3. Support "whole word" option in fast replace window:
A "whole word" option is supported in "Fast Replace" window as well as in "Pattern Counter" window.

if this option is checked, a leading and a trailing word boundary mark(\b) will be added to each search pattern, which means only the pattern that appearing as a whole word will be matched, even if the "reg exp" option is unchecked.
4. Support drag and drop to import rules in "fast replace" window and "pattern counter" window:
User can drag pattern files from file browser to "pattern counter" window to import the pattern.
User can drag search/replace rule files from file browser to "Fast Replace" window to import the search/replace rules.
5. Impove some functions:
(1) Update function rand_str, rand_str_unique, support specified delimiter and array output
rand_str(N,str1,str2,....strM,["d=delimiter|array" ])
=> Select N elements from str1 to strM randomly, and join them to a string, string will be joint by <CR> if N is negative. If the last parameter is "d=x", the string will be joint by x; If the last parameter is "d=array", the output will be an array;
rand_str_unique(N,str1,str2,....strM,["d=delimiter|array" ])
=> Select N distinct elements from str1 to strM randomly, and join them to a string, string will be joint by <CR> if N is negative. If the last parameter is "d=x", the string will be joint by x; If the last parameter is "d=array", the output will be an array;
(2) Update function get_values_all, support specified output format
=> return all the key value pair in the dictionary with format "Key<separator>Value", by default, it is a table key.
if format is specified, the output will be the specified format, e.g. '$key, $value',
6. Other minor impovement and issue fixing:
* Update ip2country database
* fix datetime function, support local encoding
* fix close command failure issue in minimized window
* fix failure issue of batch file rename from a list
* fix windows flashing issue upon opening a webpage or email