Test IronPython on Travis CI
Fix bloated build matrix
Output capture and assert rewrite not work on ipy
Turn on FullFrames to use inspect.currentframe()
Generalize duplicated feed() calls
IronPython string compatibility
System.IO.Stream impl that takes Python iterable
Almost fix schema_test
Fix invalid yaml
Remove unused import
Eliminate boilerplate ElementTree import chains
System.Xml.XmlReader backed ElementTree builder
IronPython strftime() seems to ignore %f
Short string intern is impl detail of CPython

Do not compare strings by `is` operator.
IronPython strftime() seems to ignore %z
IronPython broken if kw passed to builtin subtype
IPy b flag not work for open but only for io.open
read() can take only bytes
Merge branch 'master' into ironpython
Now write() is not a function but iterable class