quadrature: Add `pfasst::augment_nodes` and handle `is_proper` flags appropriately.
updated scalar example to fit into testing enviroment; added test routine for scalar example, but so far without any tests
added a test for the scalar example that verifies convergence orders for up to six lobatto nodes
removed first version of run_scalar_sdc function from scalar_sdc.cpp; instead, the main routine sets default values and calls the run function with these as parameter
in test_scalar, should now use size_t instead of int
test_scalar now used DoubleNear and checks directly within loop computing convergence rates
Merge pull request #64 from danielru/feature/scalar_tests

Very nice!  High fives!
imex: Support virtual nodes (0 and 1).
quadrature: Initialize matrix with zeros.
doc: Tweak README.md, begin adding notes for v0.2.0 to CHANGELOG.md.
Merge pull request #67 from memmett/feature/doc-tweaks

doc: Tweak README.md, begin adding notes for v0.2.0 to CHANGELOG.md.
Style.
Merge remote-tracking branch 'memmett/feature/fix-quadrature' into development

* memmett/feature/fix-quadrature:
  Style.
  quadrature: Initialize matrix with zeros.
  imex: Support virtual nodes (0 and 1).
  quadrature: Add `pfasst::augment_nodes` and handle `is_proper` flags appropriately.

fixes PR #68

Signed-off-by: Torbjörn Klatt <t.klatt@fz-juelich.de>
Merge branch 'development' into feature/cleanup-scalar

Signed-off-by: Torbjörn Klatt <t.klatt@fz-juelich.de>

Conflicts:
	examples/scalar/scalar_sweeper.hpp