ENH: do not coerce dates
DOC: html-doc example

note new date conversion behavior

jreback doc recommendations

cannot pass a string to to_thml

gah

working notes

modify tests

infer_types back to true as per disc. with @jreback

fix failing tests because of not correctly converted dates

weird recursion error when using format spec instead of format strings
Merge pull request #3656 from cpcloud/read-html-to-html-doc

DOC: add doc for reading from DataFrame.to_html