TST: json tests to int64 to avoid dtype issues
TST: skip tests if xlrd has lower than needed version
TST: skip pickle tests on not-little endianess
TST: skip test_encoding on non-little endian in test_pytables
TST: skip some stata tests on non-little endian
TST: convered skips on knownfailures to knownfailures (test_pickle/test_stata)
Merge pull request #3898 from jreback/test_fixes

TST: test fixes for various builds (debian)
TST: convert knowntestfailures to skip tests
Merge pull request #3906 from jreback/test_fix2

TST: convert knowntestfailures to skip tests
BUG: fix unicode -> str cast in tslib

This should use format since calling str on a unicode string is a *bad* idea
because it may or may not repr correctly.
Merge pull request #3900 from cpcloud/tslib-fix

BUG: fix unicode -> str cast in tslib
BUG: Make 'get_quote_yahoo' fail fast like other data functions.

Previously was catching `URLError` when other functions
let that bubble up. Should match other behavior in module.
CLN: Use DataError in io/data.

Bad form to use bare Exception, so created a new Exception
(`DataError`) that inherits from `PandasError`.

Doesn't affect existing code (because catching `Exception` will
still catch this error).
TST: Change network decorator to auto-check for network errors
TST: Remove explicit connectivity checks in test cases.

Instead, network decorator in pandas.util.testing checks
for that instead. You have to opt into failing on tests
by setting `pandas.util.testing._FORCE_NETWORK_ERROR` to `True`.

Note that now this means that google is no longer the arbiter
for whether there exists a network connection.
CLN: Move imports and test skip to top of file