* cmake: Made EspressoConfig into separate target.

* cmake: Limit scope of gsl dependency

* core: Moved fft to electrostatics_magnetostatics

* cmake: Limit scope of fftw3 dependency

* cmake: Limit scope of scafacos dependency

* Missing files

* Formatting

* config: Fixed python import path

* cmake: Fixed version symbols

* Fixed regression

* core: throw from Scafacos instead of runtimeError

* scafacos...

* ...

* core: Removed Shapes::Maze

* doc: Removed Maze docs

* cmake: Explicit dependencies for unit tests.

* shapes: Made Shape::SlitPore middle plain settable

* script_interface: Removed interface fore Shapes::Maze

* cmake: Removed 'LIBRARIES'

* cmake: Move up definition of 'unit_test'

* cmake: Removed core sublibraries with cyclic deps

* cmake: Removed core sublibraries with cyclic deps (cuda)

* Formatting

* cmake: Build cpp files in cuda modules with host compiler.

* cmake: Require cmake 3.10

* cmake: Guard h5md linking. Moved Vector to utils folder

* Formatting

* cmake: Single target for core including CXX and CUDA

* core: Split up serialization into core and utils

* cmake: Formatting and buidl cuda interface only when CUDA

* cmake: Cleanup

* Formatting

* cmake: Removed binary dir include dir

* cmake: scafacos needs mpi

* cmake: Removed last include_directories

* core: Moved Scafacos out of core.

* core: Fixed regression

* Formatting

* testsuite: Fixed unit test include paths/deps

* cmake: Support MPI imported target on older cmake.

* cmake: Reduce required version to 3.4

* cmake: Reintrooduce MPI bug workaround.

* cmake: Fixed build on ubuntu:xenial

* cmake: Added FindCUDA from cmake 3.9 for imported target support.

* cmake: Fixed dependency for unit tests

* cmake: Added add_gpu_library abstraction for all ways to build cuda.

* cmake: Fixed gpu arch when building cuda with clang.

* cmake: Removed no longer needed FindHDF5

* cmake: Fixed regression

* cmake: Removed cmake version requirement in subdir.

* doc: Document SlitPore.dividing_plane

* cmake: Moved stuff around