Allowed failures on Travis CI and license maintainer script

The coverage build is currently failing due to segmentation faults.
It is currently listed as an allowed failure in `.travis.yml`
to avoid erroneously flagging builds as failing.

The license maintainer hook has been rewritten in Python.

Author: robertodr

.appveyor.yml

@@ -75,7 +75,7 @@ build_script:
   - cmake --build . -- %BUILDFLAGS%
 
 test_script:
-  - ctest --parallel 2 --output-on-failure --verbose --dashboard Experimental
+  - ctest --parallel 2 --output-on-failure --dashboard Experimental --verbose --track AppVeyorCI
 
 notifications:
   - provider: Slack

.gitattributes

@@ -1,70 +1,73 @@
 # API files
-api/*.h   licensefile=.githooks/license-maintainer/LICENSE-C
-api/*.F90 licensefile=.githooks/license-maintainer/LICENSE-Fortran
+api/*.h   licensefile=.githooks/LICENSE-C
+api/*.F90 licensefile=.githooks/LICENSE-Fortran
 
 # include directory
-include/*.hpp         licensefile=.githooks/license-maintainer/LICENSE-C++
+include/*.hpp         licensefile=.githooks/LICENSE-C++
 include/STLUtils.hpp  !licensefile
-include/Config.hpp.in licensefile=.githooks/license-maintainer/LICENSE-C++
+include/Config.hpp.in licensefile=.githooks/LICENSE-C++
 
 # bin
-src/bin/*.cpp licensefile=.githooks/license-maintainer/LICENSE-C++
+src/bin/*.cpp licensefile=.githooks/LICENSE-C++
 
 # bi_operators
-src/bi_operators/*.hpp licensefile=.githooks/license-maintainer/LICENSE-C++
-src/bi_operators/*.cpp licensefile=.githooks/license-maintainer/LICENSE-C++
+src/bi_operators/*.hpp licensefile=.githooks/LICENSE-C++
+src/bi_operators/*.cpp licensefile=.githooks/LICENSE-C++
 
 # cavity
-src/cavity/*.hpp licensefile=.githooks/license-maintainer/LICENSE-C++
-src/cavity/*.cpp licensefile=.githooks/license-maintainer/LICENSE-C++
+src/cavity/*.hpp licensefile=.githooks/LICENSE-C++
+src/cavity/*.cpp licensefile=.githooks/LICENSE-C++
 
 # green
-src/green/*.hpp                    licensefile=.githooks/license-maintainer/LICENSE-C++
-src/green/*.cpp                    licensefile=.githooks/license-maintainer/LICENSE-C++
-src/green/dielectric_profile/*.hpp licensefile=.githooks/license-maintainer/LICENSE-C++
+src/green/*.hpp                    licensefile=.githooks/LICENSE-C++
+src/green/*.cpp                    licensefile=.githooks/LICENSE-C++
+src/green/dielectric_profile/*.hpp licensefile=.githooks/LICENSE-C++
 
 # interface
-src/interface/*.hpp licensefile=.githooks/license-maintainer/LICENSE-C++
-src/interface/*.cpp licensefile=.githooks/license-maintainer/LICENSE-C++
+src/interface/*.hpp licensefile=.githooks/LICENSE-C++
+src/interface/*.cpp licensefile=.githooks/LICENSE-C++
 
 # metal
-src/metal/*.F90 licensefile=.githooks/license-maintainer/LICENSE-Fortran
+src/metal/*.F90 licensefile=.githooks/LICENSE-Fortran
 
 # pedra
-src/pedra/*.inc             licensefile=.githooks/license-maintainer/LICENSE-Fortran
-src/pedra/*.F90             licensefile=.githooks/license-maintainer/LICENSE-Fortran
+src/pedra/*.inc             licensefile=.githooks/LICENSE-Fortran
+src/pedra/*.F90             licensefile=.githooks/LICENSE-Fortran
 src/pedra/pedra_dlapack.F90 !licensefile
 
 # solver
-src/solver/*.hpp licensefile=.githooks/license-maintainer/LICENSE-C++
-src/solver/*.cpp licensefile=.githooks/license-maintainer/LICENSE-C++
+src/solver/*.hpp licensefile=.githooks/LICENSE-C++
+src/solver/*.cpp licensefile=.githooks/LICENSE-C++
 
 # utils
-src/utils/*.hpp licensefile=.githooks/license-maintainer/LICENSE-C++
-src/utils/*.cpp licensefile=.githooks/license-maintainer/LICENSE-C++
-src/utils/cnpy.hpp !licensefile
-src/utils/cnpy.cpp !licensefile
-src/utils/legendre.h !licensefile
+src/utils/*.hpp           licensefile=.githooks/LICENSE-C++
+src/utils/*.cpp           licensefile=.githooks/LICENSE-C++
+src/utils/cnpy.hpp        !licensefile
+src/utils/cnpy.cpp        !licensefile
+src/utils/legendre.h      !licensefile
 src/utils/Interpolation.* !licensefile
 src/utils/Vector*         !licensefile
 
 # tests
-tests/unit_tests.cpp             licensefile=.githooks/license-maintainer/LICENSE-C++
-tests/TestingMolecules.hpp       licensefile=.githooks/license-maintainer/LICENSE-C++
-tests/Fortran_host/*.f90         licensefile=.githooks/license-maintainer/LICENSE-Fortran
-/tests/C_host/*.h                 licensefile=.githooks/license-maintainer/LICENSE-C
-/tests/C_host/*.c                 licensefile=.githooks/license-maintainer/LICENSE-C
-tests/bi_operators/*.cpp         licensefile=.githooks/license-maintainer/LICENSE-C++
-tests/cpcm/*.cpp                 licensefile=.githooks/license-maintainer/LICENSE-C++
-tests/dielectric_profile/*.cpp   licensefile=.githooks/license-maintainer/LICENSE-C++
-tests/gepol/*.cpp                licensefile=.githooks/license-maintainer/LICENSE-C++
-tests/green/*.hpp                licensefile=.githooks/license-maintainer/LICENSE-C++
-tests/green/*.cpp                licensefile=.githooks/license-maintainer/LICENSE-C++
-tests/iefpcm/*.cpp               licensefile=.githooks/license-maintainer/LICENSE-C++
-tests/input/*.cpp                licensefile=.githooks/license-maintainer/LICENSE-C++
-tests/numerical_quadrature/*.cpp licensefile=.githooks/license-maintainer/LICENSE-C++
+tests/unit_tests.cpp             licensefile=.githooks/LICENSE-C++
+tests/TestingMolecules.hpp       licensefile=.githooks/LICENSE-C++
+tests/Fortran_host/*.f90         licensefile=.githooks/LICENSE-Fortran
+/tests/C_host/*.h                licensefile=.githooks/LICENSE-C
+/tests/C_host/*.c                licensefile=.githooks/LICENSE-C
+tests/bi_operators/*.cpp         licensefile=.githooks/LICENSE-C++
+tests/cpcm/*.cpp                 licensefile=.githooks/LICENSE-C++
+tests/dielectric_profile/*.cpp   licensefile=.githooks/LICENSE-C++
+tests/gepol/*.cpp                licensefile=.githooks/LICENSE-C++
+tests/green/*.hpp                licensefile=.githooks/LICENSE-C++
+tests/green/*.cpp                licensefile=.githooks/LICENSE-C++
+tests/iefpcm/*.cpp               licensefile=.githooks/LICENSE-C++
+tests/input/*.cpp                licensefile=.githooks/LICENSE-C++
+tests/numerical_quadrature/*.cpp licensefile=.githooks/LICENSE-C++
 
 # tools
-src/make_cmake_files.py   licensefile=.githooks/license-maintainer/LICENSE-Python
-tools/pcmsolver.py.in     licensefile=.githooks/license-maintainer/LICENSE-Python
-tests/make_cmake_files.py licensefile=.githooks/license-maintainer/LICENSE-Python
+doc/conf.py               licensefile=.githooks/LICENSE-Python
+doc/gfx/cloc_tools.py.in  licensefile=.githooks/LICENSE-Python
+src/make_cmake_files.py   licensefile=.githooks/LICENSE-Python
+tools/codata.py.in        licensefile=.githooks/LICENSE-Python
+tools/pcmsolver.py.in     licensefile=.githooks/LICENSE-Python
+tests/make_cmake_files.py licensefile=.githooks/LICENSE-Python