Merge pull request #52 from Mathics3/release-4.0.0

Get ready for release 4.0.0

Author: rocky

NEWS.md

@@ -1,3 +1,12 @@
+4.0.0
+-----
+
+* Handle images via PNG and matplotlib
+* Packaging: include matplotlib in full install
+* Customize Asymptote configuration and add a psviewer that removes eps trash
+* Bump minimum Mathics core version to 4.0.0
+* Bug fix: Check if `self` has `session` attribute in `asy.__del__`
+
 3.3.1
 -----
 

mathicsscript/version.py

@@ -4,4 +4,4 @@
 # well as importing into Python. That's why there is no
 # space around "=" below.
 # fmt: off
-__version__="3.3.2.dev0"  # noqa
+__version__="4.0.0"  # noqa