support histsize & erasedups (closes gh-29), pure php implementation of libedit::readline_list_history
fixed bad copy&paste in docstring
properly handle comments& line seps in Libedit::listHistory().
new test tool for String::unvis, PSR1/2 validation
Ran all this through php-cs-fixer
fixed undeclared properties in Configuration
fix for segfault in LebeditTest.php on PHP5.5
fix GNUReadline for segfault on PHP5.7 w libedit
trying to find the mysterious Travis bug...
updated README
Merge branch 'master' of https://github.com/bobthecow/psysh into upstream
Fix for GH#32.
Add an Exception Presenter.
Add a MongoCursor Presenter.

Don’t enable it by default, but mention it in the README. Mebbe it’ll encourage people to write more Presenters.
Merge branch 'master' of https://github.com/ju1ius/psysh into julius-master

Conflicts:
	src/Psy/Presenter/ObjectPresenter.php