Merge pull request #1 from fpco/master

update from upstream

build-constraints.yaml

@@ -2,6 +2,14 @@ ghc-major-version: "8.0"
 # Constraints for brand new builds
 packages:
 
+    "Henning Thielemann <stackage@henning-thielemann.de> @thielema":
+        - numeric-prelude
+        - non-negative
+        - non-empty
+        - storable-record
+        - utility-ht
+        - prelude-compat
+
     "Jeremy Barisch-Rooney <barischj@tcd.ie> @barischj":
        - threepenny-gui-flexbox
 
@@ -2841,6 +2849,10 @@ packages:
     "Devon Hollowood <devonhollowood@gmail.com> @devonhollowood":
         - search-algorithms
 
+    "Chris Dornan <chris@chrisdornan.com> @cdornan":
+        - regex
+        - regex-examples
+
     # If you stop maintaining a package you can move it here.
     # It will then be disabled if it starts causing problems.
     # See https://github.com/fpco/stackage/issues/1056
@@ -2901,6 +2913,9 @@ packages:
         # https://github.com/fpco/stackage/issues/2354
         - mainland-pretty < 0.5.0.0
 
+        # https://github.com/fpco/stackage/issues/2365
+        - matplotlib < 0.4.1
+
 # end of packages
 
 # Package flags are applied to individual packages, and override the values of