follow schema_salad version bump

Author: mr-c

cwltool/process.py

@@ -988,7 +988,7 @@ def validate_hints(
                         if key not in self.doc_loader.identifiers
                     )  # strip identifiers
                     validate_ex(
-                        avsc_names.get_name(plain_hint["class"], ""),
+                        avsc_names.get_name(plain_hint["class"], None),
                         plain_hint,
                         strict=strict,
                     )

requirements.txt

@@ -2,7 +2,7 @@ requests>=2.4.3
 ruamel.yaml>=0.12.4,<=0.16.5
 rdflib>=4.2.2,<4.3
 shellescape>=3.4.1,<3.5
-schema-salad>=5,<6
+schema-salad>=6,<7
 typing>=3.5.3; python_version<"3.6"
 prov==1.5.1
 bagit==1.6.4

setup.py

@@ -97,7 +97,7 @@
         "ruamel.yaml >= 0.12.4, <= 0.16.5",
         "rdflib >= 4.2.2, < 4.3.0",
         "shellescape >= 3.4.1, < 3.5",
-        "schema-salad >= 5.1, < 6",
+        "schema-salad >= 6, < 7",
         "mypy-extensions",
         "psutil",
         "prov == 1.5.1",

tests/test_examples.py

@@ -10,7 +10,6 @@
 
 import py.path
 import pytest  # type: ignore
-import schema_salad.validate
 from ruamel.yaml.comments import CommentedMap, CommentedSeq
 from schema_salad.exceptions import ValidationException