Update version requirement to 2.5

IPython/__init__.py (+12/-9)
IPython/config/loader.py (+66/-25)
IPython/config/tests/test_loader.py (+9/-10)
IPython/core/application.py (+206/-81)
IPython/core/completer.py (+89/-73)
IPython/core/crashhandler.py (+41/-47)
IPython/core/debugger.py (+33/-0)
IPython/core/history.py (+47/-25)
IPython/core/hooks.py (+1/-2)
IPython/core/ipapp.py (+295/-184)
IPython/core/iplib.py (+240/-179)
IPython/core/magic.py (+96/-60)
IPython/core/prefilter.py (+72/-15)
IPython/core/prompts.py (+20/-8)
IPython/core/pylabtools.py (+145/-0)
IPython/core/quitter.py (+12/-7)
IPython/core/release.py (+1/-1)
IPython/core/tests/obj_del.py (+0/-35)
IPython/core/tests/simpleerr.py (+32/-0)
IPython/core/tests/tclass.py (+14/-10)
IPython/core/tests/test_completer.py (+35/-0)
IPython/core/tests/test_iplib.py (+216/-28)
IPython/core/tests/test_magic.py (+137/-190)
IPython/core/tests/test_prefilter.py (+34/-0)
IPython/core/tests/test_run.py (+174/-0)
IPython/core/ultratb.py (+60/-21)
IPython/core/usage.py (+34/-325)
IPython/extensions/parallelmagic.py (+4/-0)
IPython/extensions/pretty.py (+3/-58)
IPython/extensions/tests/test_pretty.py (+51/-6)
IPython/external/_numpy_testing_utils.py (+120/-0)
IPython/external/argparse.py (+89/-38)
IPython/external/decorators.py (+245/-51)
IPython/frontend/prefilterfrontend.py (+17/-37)
IPython/frontend/tests/test_prefilterfrontend.py (+9/-6)
IPython/gui/wx/ipshell_nonblocking.py (+15/-14)
IPython/kernel/__init__.py (+1/-1)
IPython/kernel/clusterdir.py (+53/-65)
IPython/kernel/core/interpreter.py (+3/-4)
IPython/kernel/core/tests/test_redirectors.py (+6/-6)
IPython/kernel/engineservice.py (+3/-3)
IPython/kernel/error.py (+2/-2)
IPython/kernel/ipclusterapp.py (+8/-19)
IPython/kernel/ipcontrollerapp.py (+14/-34)
IPython/kernel/ipengineapp.py (+8/-27)
IPython/kernel/tests/test_multienginefc.py (+9/-1)
IPython/kernel/tests/test_taskfc.py (+9/-1)
IPython/lib/inputhook.py (+49/-3)
IPython/quarantine/InterpreterPasteInput.py (+0/-124)
IPython/scripts/iptest (+19/-3)
IPython/testing/__init__.py (+18/-0)
IPython/testing/_doctest26.py (+110/-0)
IPython/testing/_paramtestpy2.py (+89/-0)
IPython/testing/_paramtestpy3.py (+62/-0)
IPython/testing/decorators.py (+84/-14)
IPython/testing/decorators_trial.py (+0/-132)
IPython/testing/globalipapp.py (+168/-0)
IPython/testing/iptest.py (+349/-185)
IPython/testing/ipunittest.py (+189/-0)
IPython/testing/nosepatch.py (+53/-0)
IPython/testing/parametric.py (+3/-0)
IPython/testing/plugin/ipdoctest.py (+27/-180)
IPython/testing/plugin/test_ipdoctest.py (+0/-19)
IPython/testing/tests/test_decorators.py (+71/-13)
IPython/testing/tests/test_decorators_trial.py (+9/-4)
IPython/testing/tests/test_ipunittest.py (+122/-0)
IPython/testing/tests/test_tools.py (+31/-9)
IPython/testing/tools.py (+255/-7)
IPython/utils/baseutils.py (+51/-0)
IPython/utils/genutils.py (+129/-41)
IPython/utils/platutils.py (+1/-1)
IPython/utils/platutils_posix.py (+14/-1)
IPython/utils/tests/test_genutils.py (+71/-51)
IPython/utils/tests/test_imports.py (+0/-1)
IPython/utils/tests/test_platutils.py (+19/-6)
MANIFEST.in (+1/-0)
README.txt (+22/-4)
docs/emacs/ipython.el (+1/-1)
docs/source/development/coding_guide.txt (+34/-0)
docs/source/development/index.txt (+1/-0)
docs/source/development/magic_blueprint.txt (+103/-0)
docs/source/development/testing.txt (+366/-32)
docs/sphinxext/ipython_directive.py (+641/-0)
iptest.py (+26/-0)
ipython.py (+6/-2)
setup.py (+44/-3)
setupegg.py (+1/-7)
tools/build_release (+6/-6)