Optimized copy constructors
Replace copy_base with optimized assignment operator
Revert "Revert "Merge pull request #72 from stan-dev/feature/add_command_test_to_unit_tests""

This reverts commit 41582f92b2922b391879a166f7776933a7f330af.
adding command test to test-unit target
Merge branch 'develop' of https://github.com/stan-dev/stan into develop
MUse boost::lexical cast for more robust reading of numbers in scientic notation
Removed debug output line
Merge branch 'develop' into feature/add_command_test_to_unit_tests
Merge pull request #113 from stan-dev/feature/fix_print_and_sci_note

Fix bin/print and Extremely Small Numbers
adding default constructors to the stan_csv_reader's structures.

Under Windows, some of the structure members are not being set to default values causing unexpected behavior
Merge branch 'develop' of https://github.com/stan-dev/stan into feature/manual-patch
added to_vector with tests
added missing compiled model tests
added -Wno-c++11-long-long flag for clang++ in linux. Fixes issue #62
added -Wno-c++11-long-long flag for clang++ in mac
Change ordering of Wno-c++11-long-long to ensure it is respected.
adding a dependency on the test/models/command test for test-unit
fixes issue #63.

updated code to populate chains so the modes are identified
Merge pull request #117 from stan-dev/feature/issue62

added -Wno-c++11-long-long flag for clang++ in linux. Fixes #62.
Merge pull request #116 from stan-dev/feature/add_to_vector

Feature/add to vector. Fixes #30.