Hex constants

• Added support for hexadecimal numbers in assignments, conditions, and for loops (a hexadecimal must start from either "0x" or "0X")

Version and substring

• correct processing of BOM when loading a script
• new function substr to extract a substring that matches a regular expression
• new functions to works with semantic versioning: increment, comparison, and matching

File name patterns

Added a function glob to get list of a files and/or directories by a Linux shell style pattern

First public release

0.3.1

rename package