Fix bug 894: the sign of LDLT was not re-initialized at each call of compute()
Add unit tests for Rotation2D's inverse(), operator*, slerp, and fix regression wrt explicit ctor change
Fix bug 859: pexp(NaN) returned Inf instead of NaN
Addendum to bug 859: pexp(NaN) for double did not return NaN, also, plog(NaN) did not return NaN.
psqrt(NaN) and psqrt(-1) shall return NaN if EIGEN_FAST_MATH==0
Bug 718: Introduce a compilation error when using the wrong InnerIterator type with a SparseVector
Bug 766: Check minimum CUDA version
Bug 701: workaround (min) and (max) blocking ADL by introducing numext::mini and numext::maxi internal functions and a EIGEN_NOT_A_MACRO macro.
Bug 670: add unit test for mapped input in sparse solver.