Added special version of STRING-LEFT-TRIM for simple vector bag and simple string.
Added special version of STRING-LEFT-TRIM for simple vector bag and general string.
Added special version of STRING-LEFT-TRIM for general vector bag and simple string.
Added special version of STRING-LEFT-TRIM for general vector bag and general string.
New version of STRING-LEFT-TRIM.
Provide routines for converting strings to other vector types.
Test different versions of STRING-LEFT-TRIM.
Fixed typos.
Use general version of EXTRACT-INTERVAL for non-simple strings.