Correct to_stream/from_stream handling of stream data

* to_stream and from_stream now reset the stream formatting state to
  default settings on entry, and restore the stream state on exit.

* to_stream and from_stream now correctly handle mis-modified flags.

* Fix %h to be equivalent to %b instead of %B.

* This addresses issues 319, 320 and 321.
This commit is contained in:
Howard Hinnant 2018-03-31 13:06:57 -04:00
parent e7e1482087
commit 0125d330ab

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