License file added

LICENSE

+Copyright (c) 2020, Michael Hanus
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+1. Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+
+2. Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+
+3. Neither the names of the copyright holders nor the names of its
+   contributors may be used to endorse or promote products derived from
+   this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

package.json

@@ -4,6 +4,8 @@
     "author": "Michael Hanus <mh@informatik.uni-kiel.de>",
     "synopsis": "The standard preprocessor of Curry",
     "category": [ "Programming", "Analysis" ],
+    "license": "BSD-3-Clause",
+    "licenseFile": "LICENSE",
     "dependencies": {
         "base"          : ">= 1.0.0, < 2.0.0",
         "abstract-curry": ">= 2.0.0",
@@ -28,8 +30,8 @@
         "easycheck"     : ">= 0.0.1"
     },
     "compilerCompatibility": {
-        "pakcs": ">= 2.0.0",
-        "kics2": ">= 2.0.0"
+        "pakcs": ">= 2.0.0, < 3.0.0",
+        "kics2": ">= 2.0.0, < 3.0.0"
     },
     "sourceDirs": [ "src",
                     "src/IntegratedCode",