Major Update

BREAKING CHANGES! (See below.)

More complete list of changes available in CHANGES.MD.

NEW

Name: BetterScripts shtoolkit.
Libraries:
- libmap.sh - emulated associative arrays for any shell.
- libpath.sh - commands to assist with path processing, including path information like size, owner, etc and a portable mktemp alternative.
- libstring.sh - commands assist with string processing.
Simple debugging support across all libraries.

BREAKING CHANGE Significantly reworked libarray.sh which is now more robust, and more consistent.
General improvements across all libraries.
Test harness updates and changes for correctness, robustness, and portability.

Changes required result in differences verses previous library versions - some previously supported usage is no longer works:

Pattern matching has been completely rewritten - it is now more portable, robust, and the same options are available everywhere. Some previously working matches will no longer match. Affects array_remove, array_search, array_contains, andarray_split.
Command options now MUST precede any non-option arguments. Affects array_from_path.
array_printf no longer writes anything for empty arrays (previously a single <newline> would be written).