Minimization improvement#17

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sflotron wants to merge 13 commits intolaurentkneip:masterfrom

sflotron:minimization-improvement

Commits on Apr 17, 2015

first steps in improving accuracy of GE estimates
baritone
committed

Commits on May 1, 2015

small updates
sflotron
committed

Commits on May 5, 2015

use conjugated gradient like method to solve optimization problem
sflotron
committed

Commits on May 11, 2015

fix a bug in conjugate grandient method
sflotron
committed

Commits on May 25, 2015

update stopping criterion, bug fixes and code cleaning
baritone
committed

Commits on Jun 15, 2015

code cleaning and small fixes
sflotron
committed
small fixes and code cleaning
sflotron
committed

Commits on Jun 16, 2015

small fixes
baritone
committed

Commits on Jul 15, 2015

small fixes in conjugate gradient method
sflotron
committed
merge
sflotron
committed

Commits on Aug 6, 2015

code cleaning
sflotron
committed
add gitignore file
sflotron
committed

Commits on Aug 7, 2015

revert some unmodified files to version of opengv repository
sflotron
committed