Added filter/concatenate to CMakeLists.txt
Modified the filter-chain.cc test to chain functions like so:
f1:R5->R1
f2:R1->R1
fchain = chain(f1, f2)
Doesn't work
[travis] Synchronize
Merge pull request #48 from bchretien/master

[travis] Synchronize
Fix coverity download + remove useless dependency.
Merge pull request #49 from bchretien/master

Fix coverity download + remove useless dependency.
[travis] Synchronize
Add SumOfC1SquaresSparse.
Fix Clang warnings/errors + reindent.
Export -DEIGEN_RUNTIME_NO_MALLOC flag for dependency

  function.hh defines EIGEN_RUNTIME_NO_MALLOC variable before including
  Eigen/Core. If a dependency includes Eigen/Core before function.hh, function
  set_is_malloc_allowed turns out to be undefined.
Add missing include in bind.hh
Allow the use of a constant term in numeric quadratic formula
Merge pull request #36 from stanislas-brossette/master

Exhibit bug in filter/chain.hh
Fix filter-chain
Improve testing of numerical functions and chain
Fix numeric-quadratic-function
Optimize finite difference gradients
Optimize finite difference gradients further
Fix ADL error.

error: ‘adaptee_’ was not declared in this scope, and no declarations
were found by argument-dependent lookup at the point of instantiation
[-fpermissive]
Merge pull request #51 from bchretien/master

Fix ADL error.