NEW: Added new JKQTPCALabelType element JKQTPCALTscientific, so axis label ticks can be displayed as numbers in scientific notation like 1.2E-34
auto-generate JKQTPCALabelType documentation
new: iterator interface and improved documentation for JKQTPDatastore
reorganization of library (better separation of common code in jkqtpcommon and other code e.g. in jkqtplotter or jkqtmathtext)