Switch license from BSD-2 to MIT.

The MIT license is the de facto standard in the Julia community.

LICENSE

@@ -0,0 +1,21 @@
+The MIT License
+
+Copyright (c) 2017-2020: Evan Patterson.
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.

LICENSE.md

@@ -1,26 +0,0 @@
-The Catlab.jl package is licensed under the Simplified "2-clause" BSD License:
-
-> Copyright (c) 2017: Evan Patterson.
-> All rights reserved.
-> 
-> Redistribution and use in source and binary forms, with or without
-> modification, are permitted provided that the following conditions are met:
-> 
-> * Redistributions of source code must retain the above copyright notice, this
->   list of conditions and the following disclaimer.
-> 
-> * 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.
-> 
-> 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.
-> 

Project.toml

@@ -1,6 +1,6 @@
 name = "Catlab"
 uuid = "134e5e36-593f-5add-ad60-77f754baafbe"
-license = "BSD2"
+license = "MIT"
 authors = ["Evan Patterson <evan@epatters.org>"]
 version = "0.7.3"