Added a few lines to docs
Fix the docstring of Matrix.det

The method name for the LU method should be "det_LU", not
"lu_decomposition". We should perhaps change the code to match the docstring
instead, but that would break compatibility.
Altered docs a bit
Minor changes
Merge pull request #2466 from Manoj-Kumar-S/docs

Added a few lines to docs
Another fix in the docstring of Matrix.det
Merge pull request #2471 from asmeurer/matrix_det_lu

Fix the docstring of Matrix.det
Fix issue 2497: implement sequence repetition for Tuple (mul to integer)
Merge pull request #2475 from skirpichev/2497-Tuple-mul

Fix issue 2497: implement sequence repetition for Tuple (mul to integer)
Merge branch 'master' into remove-auto-distribute-constants