New version 3.4

This new version is mostly a bug fixing release that addresses some minor errors you may have found in the previous release. It also includes some new features:

•  A much improved email history window. It now supports filtering emails by the received date, sender address, processing result and email subject.
• Faster email history window when many (thousands) of emails are listed.
• Flow arrows on the left panel that start on bifurcation conditions now are red or green depending on the condition.