-------- History -----------------------------------------
// History - Purged changes prior to v2.0
V4.0 Bugs Fixes
-Multiple language support added in this version (Chinese/Japanese/Korean)
-Add function to deal with duplicate output text
-Other minor fixes
V3.0 Bugs Fixes
-Graphic User interface added in this version
-The table in PDF document can be output in good layout
-Other minor fixes
V2.5 Bugs Fixes
-The layout of PDF document can be kept in the output text file.
-Fix a buffer overflow bug in FlateDecode
V2.3 Bugs Fixes
-Add LZWDecode support for PDF 1.2
-Fix octal numbers in text can't translated properly
V2.2 Bugs Fixes
-Add batch files process functionality
-Fix bug when deal with nested dictionary
-Other minor fixes
V2.1 Bugs Fixes
-Fix buffer overflow when deal with huge file
-Other minor fixes