Licensing and removal of tsnehm

Added LICENSE.txt and removed the 1D t-SNE heatmaps wrapper from this
code (t-SNE heatmaps has its own repository at
https://github.com/KlugerLab/t-SNE-Heatmaps).

LICENSE.txt

@@ -0,0 +1,135 @@
+Different attribution requirements and conditions apply to different files in this repository:
+
+========================================================================================
+The following license applies to the following files in the src directory: tsne.cpp, tsne.h, sptree.cpp, sptree.h, vptree.h
+
+  Copyright (c) 2014, Laurens van der Maaten (Delft University of Technology)
+  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. All advertising materials mentioning features or use of this software
+     must display the following acknowledgement:
+     This product includes software developed by the Delft University of Technology.
+  4. Neither the name of the Delft University of Technology 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 LAURENS VAN DER MAATEN ''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 LAURENS VAN DER MAATEN 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.
+
+
+========================================================================================
+The following license applies to the following files in the src directory: nbodyfft.h, nbodyfft.cpp, parallel_for.h, time_code.h
+
+(The MIT License)
+
+Copyright (c) [2019] [George Linderman]
+
+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.
+
+========================================================================================
+The following license applies to following files in the progress_bar directory: ProgressBar.hpp
+
+(The MIT License)
+
+Copyright (c) 2016 Prakhar Srivastav <[email protected]>
+
+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.
+
+========================================================================================
+The following license applies to following files in the src directory: annoylib.h
+
+
+Copyright (c) 2013 Spotify AB
+
+Licensed under the Apache License, Version 2.0 (the "License"); you may not
+use this file except in compliance with the License. You may obtain a copy of
+the License at
+
+http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+License for the specific language governing permissions and limitations under
+the License.
+
+========================================================================================
+The following license applies to all files in the src/winlibs/fftw directory
+
+FFTW is Copyright © 2003, 2007-11 Matteo Frigo, Copyright © 2003, 2007-11
+Massachusetts Institute of Technology.
+
+FFTW is free software; you can redistribute it and/or modify it under the terms
+of the GNU General Public License as published by the Free Software Foundation;
+either version 2 of the License, or (at your option) any later version.
+
+This program is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+PARTICULAR PURPOSE. See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program; if not, write to the Free Software Foundation, Inc., 51 Franklin
+Street, Fifth Floor, Boston, MA 02110-1301 USA You can also find the GPL on the
+GNU web site.
+
+In addition, we kindly ask you to acknowledge FFTW and its authors in any
+program or publication in which you use FFTW. (You are not required to do so;
+it is up to your common sense to decide whether you want to comply with this
+request or not.) For general publications, we suggest referencing: Matteo Frigo
+and Steven G. Johnson, “The design and implementation of FFTW3,” Proc. IEEE 93
+(2), 216–231 (2005).
+
+Non-free versions of FFTW are available under terms different from those of the
+General Public License. (e.g. they do not require you to accompany any object
+code using FFTW with the corresponding source code.) For these alternative
+terms you must purchase a license from MIT’s Technology Licensing Office. Users
+interested in such a license should contact us ([email protected]) for more
+information.