Update cibuildwheel and cmake

Author: mmatl

.travis.yml

@@ -22,7 +22,7 @@ install:
       brew install python3;
     fi
 # Install cibuildwheel using pip3 to make sure Python 3 is used.
-  - pip3 install cibuildwheel==0.6.0
+  - pip3 install cibuildwheel==0.7.1
 
 script:
   - cibuildwheel --output-dir wheelhouse

requirements/build.bash

@@ -8,4 +8,4 @@ cd fcl
 cmake .
 make -j4
 make install
-cd ..
+cd ..

requirements/install_cmake.bash

@@ -1,5 +1,5 @@
 # install cmake using their shell script
-# we do this because fcl needs cmake 2.8.12, but centos 5
+# we do this because fcl needs cmake >= 2.8.12, but centos 5
 # from the manylinux image has only cmake 2.8.11
-curl -OL https://cmake.org/files/v2.8/cmake-2.8.12.2-Linux-i386.sh
-bash cmake-2.8.12.2-Linux-i386.sh --skip-license --prefix=/usr
+curl -OL https://cmake.org/files/v3.11/cmake-3.11.0-Linux-x86_64.sh
+bash cmake-3.11.0-Linux-x86_64.sh --skip-license --prefix=/usr