Update setup.py

setup.py

@@ -51,15 +51,12 @@
 
 ### details of dependencies:
 # 
-# Only tested in Python 2.7, but it ought to work in Python 2.6 (will be tested someday).
-# Will not work in Python 3.x without 2to3 conversion (also untested).
-# The module is pure-Python, so (for instance) it works in Jython 2.7.
+# Tested in Python 3.4-3.8.
+# Will not work in Python 2.x.
 # 
-# Avro is required; it is an integral part of PFA (only versions 1.7.6 -- 1.7.7 have been tested).
-# PLY is required; it is used to parse PrettyPFA and Inspector commandlines (only version 3.4 has been tested).
+# Avro is required; it is an integral part of PFA.
+# PLY is required; it is used to parse PrettyPFA and Inspector commandlines.
 # 
-# PyYAML is an optional dependency; it is only used by the titus.reader.yamlToAst function (and only version 3.11 has been tested).
-# Numpy is an optional dependency; it is only used by the "interp", "la", "stat.test", and "model.reg" PFA libraries, as well as Titus producers (and only version 1.7.1 has been tested).
-# pytz is an optional dependency; it is only used by the "time" PFA library (2015.4 is required for adherence to PFA 0.8.1).
-# 
-# The test suite attempts to import all optional dependencies.
+# PyYAML is an optional dependency; it is only used by the titus.reader.yamlToAst function.
+# Numpy is an optional dependency; it is only used by the "interp", "la", "stat.test", and "model.reg" PFA libraries, as well as Titus producers.
+# pytz is an optional dependency; it is only used by the "time" PFA library.