the JSON data source and the respective JSON query executer were moved
from the samples folder to the core library;
support for macros added in XLS and XSLX exporters;
the repository APIs were enhanced with support for pluggable persistence
services to load and store resources in the repository;
the "net.sf.jasperreports.export.pdf.force.linebreak.policy" configuration
property is un-deprecated, as a partial revert of the changes made in 4.1.1 with
regards to PDF text rendering; These changes were partially reverted as they affected
the performance of the PDF exporter when dealing with simple texts. The AWT-based text
rendering is now performed only on complex text fields that contain tab characters
for tab stop alignment or contain multiple paragraphs, with variable paragraph styling.
minor bug fixes and improvements;
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