Fixed dare function...finally.  Seems all good now
Minor edit to riccati.py
Fixed a bug in riccati.py
added a reference to new doubling algorithm
worked on evans_sargent code
added evans_sargent material
minor edit
Merge branch 'master' of github.com:jstac/quant-econ into tests
Merge branch 'tests' of github.com:jstac/quant-econ into tests
TESTS: Fixed lqcontrol test tolerance problem.