Provide access function for vectors and matrices

For a general access of matrices and vectors, using various bracket types, the MR introduces the function access(vector, i) and access(matrix, i,j) that redirects to the specific implementation. Additionally Concepts are added to test whether an object can be accessed like a vector or matrix.

changed title from Feature/access to Provide access function for vectors and matrices

changed the description

Add a CMakeLists entry for Access.hpp and HybridSize.hpp.

added 1 commit

• 812b585c - improved documentation and add header files to CMakeLists.txt

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resolved all discussions

added 18 commits

• 812b585c...3fec45ce - 13 commits from branch master
• be9c1a42 - add functionality to access vector and matrix components
• 1a88fb4a - add hybrid size and num_rows/num_cols for vectors and matrices
• 27c9ec6b - Implemented tests for HybridSize and Access
• c5c62221 - improved documentation and add header files to CMakeLists.txt
• 22076b82 - use new environment class

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enabled an automatic merge when the pipeline for 22076b82 succeeds

merged

mentioned in commit 1bf3b619