[refactory-2020] Updating PRNG dependent code. Singleton class updated to enable building and running tests

rename framweork/sequence int framework/process

remove all dynamic build files from main corsika directory, move into src

re-added main/shower

fixed wrong file locations

Update corsika.hpp. Re-defining the version macros.

Update corsika.hpp

Update CONTRIBUTING.md

Update MAINTAINERS.md
Deleted FIXME.md

Deleted AUTHORS

Update COLLABORATION_AGREEMENT.md

Update .clang-format

Update .gitlab-ci.yml

added packages: proposal, conex, cnpy, spdlog, lcov, corsika-data

prevent in-source builds

fotran language

flags, sections

build types

fixed stack_example

rename directories

corsika8 interface target

fixed few compilation, dependency issues in new system

clang error

simpler cmake files, using functions, re-introduce run_examples target

clang format

copyright notices

fixed CI script, clang-format

simplify ctest output

better interfaces for urqmd and qgsjII, conex

updated conex, data cmake integration

build system cmake updates

also updated corsika.hpp

added earth radius

moved static_pow from corsika::units::si::detail to corsika::units

updated units::si namespaces throughout the project

No python jobs

removed a lot of stray using namespaces and corsika::units::si in entire codebase

[refactory-2020] stack implementations: updated

[refactory-2020] stack implementations: updated

[refactory-2020] stack implementations

[refactory-2020] stack implementations: !290 headers

[refactory-2020] stack implementations: !290 headers

initial refactory

Refactoring corsika/core corsica/framework/geometry

...

refactory: corsika/framework/sequence

refactorying...

header.h -> header.hpp + other refacorying...

...

refactory media directory...

refactory: corsika/processes

...

refactoring...

testing...

Sibyll headers...

Pythia headers...

module sub-dir

some floating cc files around

eliminate relative include paths on top directories

fixing include file paths, remove quotes from include directives, fix remaining include guards and correct file names ...

unit tests: fixing include file paths, remove quotes from include directives, fix remaining include guards and correct file names ...

corsika/detail inclusion

corsika/detail changes

corsika::secondary_namespaces supressed in favor of detail

more include guards, relative file path, etc ...

nested class promotion to corsika::detail

Inteface to Pythia

one more relative path...

eliminating files...

dependencies managment...

...

dependencies refactory

adding corsika/modules and catch2

build scripts for UrQMD

make modules compile

cmake

first working vesion of new fwk

need to generate some header files

build scripts for dependencies

sibyll works now

proper file endings in many places

Remove proposal from cascade example, improve error message.
Improve output, and shower diagnostics: hunting all the energy Produce REAL error message.

include proposal in build system
incl. proposal in cmake build. fix several problems.

The proposal library has to be installed manually and corresponding cmake variables have to be exported.