TST: change a small float comparison to np.allclose
DOC: cookbook addition
Merge pull request #4307 from jreback/ujson_small_fix

TST: change a small float comparison to np.allclose (GH4306)
DOC: add 0.13 to release notes
TST: make sure test passes even if componnents link isn't present
Merge pull request #4310 from cpcloud/network-failure-hack

TST: make sure test passes even if components link isn't present
DOC: cookbook example