Version 1.0 Alpha 3
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* common library:
- split time related library from string.c to date_str.c
* more/pmore:
- refine hot-key for help (h/F1) and left-shift (SHIFT-TAB)
(Note: SHIFT-TAB hot-key maybe not work on some BBS client like PCManX)
- refine related define macro
* visio/pfterm:
- fix infinity loop issue in outx() function
- refine grayout() usage and related parameters consistent with pfterm.
- Re-enable `ansi_move()` in visio, and rename it to `move_ansi()` to be consistent with pfterm.
- Reassign special key values and add support for function keys 'F1' - 'F12'.
- Merge the two definition bodies of `int vkey(void)` into one.
- Merge the two definition bodies of `int vkey(void)` into one.
- Make `igetch()` always return positive value for normal characters.
- Reassign special key values and add support for function keys 'F1' - 'F12'.
* other:
- remove pop3 option in contact.c
- Use macro `KEY_NONE` instead of hardcoded `12345`.
- add PID record of login bbs users