* Update Cython version information for v1.10.1
- v1.10.1 has Cython==0.28.2
- Added the |cython_install| variable in some places
- Replaced the outdated information in `guide/basic.rst`
- Made sure the list in `deps-cython.rst` matches the table in
`installation-linux.rst`
* Match version tables; |cython_install| everywhere
- The version table adjustment wasn't included previously, fixed here.
- It was decided to replace it with |cython_install| variable everywhere
Removed 'Platform specifics' from guide (old and/or already in separate files). Change mod -> doc for cleaner links. Add warning for id (value assigned to id != string). Fix parameters' types and vertical align of elements.