business_rules 8.x-1.0-beta8

Changes since 8.x-1.0-beta7:

• #3043734 by quixxel, C.E.A, yuriseki: Update to beta7 fails: SQLSTATE[42000] (#)
• #3016888 by lexsoft, Andy-vv, C.E.A, yuriseki: Variables are broken and returning NULL values for Drupal 8.7.x (#)
• Merge branch '8.x-1.x' of git.drupal.org:project/business_rules into 8.x-1.x (#)
• Merge branch 'beta-8' into 8.x-1.x (#)
• #3053439 by lexsoft, C.E.A: View results variable to use field formatter instead of raw value (#)
• #2980052 by lexsoft, C.E.A, wombatbuddy, yuriseki: Tokens and Twig style variables are not working in "Show a message" and "Set values to entity variable" Actions (#)
• #3051064 by Qandeel, colan: Ensure field exists before getting it. (#)
• #2997487 by waspper, marko.romsak: Look for "add_to_cart" as well as "register". (#)
• #3044426 by lexsoft: Process items only if there are any. (#)
• #3044255 by daften: Increased Subject maxlength & removed extra definition. (#)