capitalize Kwant and Tinyarray where appropriate

AUTHORS

INSTALL

LICENSE

TODO

doc/Makefile

doc/source/conf.py

doc/source/contrib/index.rst

doc/source/index.rst

doc/source/reference/index.rst

doc/source/reference/kwant.linalg.rst

doc/source/reference/kwant.plotter.rst

doc/source/reference/kwant.rst

doc/source/reference/kwant.solvers.rst

doc/source/tutorial/README

doc/source/tutorial/index.rst

doc/source/tutorial/introduction.rst

doc/source/tutorial/quantum_wire_revisited.py

doc/source/tutorial/tutorial1.rst

doc/source/tutorial/tutorial2.rst

doc/source/tutorial/tutorial3.rst