PDF-Writer v3.9 Release Notes
Release Date: 2017-09-23 // over 6 years ago-
➕ Add AES support to read, write and modification scenarios. As a results - some bug corrections when reading/modifying scenarios that only come up with PDF versions >= 1.6, which the lib didn't handle before.
0️⃣ Also - default pdf level is now 1.4, to match PNG support that was recently added and its requirement for transparency.