Changelog:
===========
- The logging info under windows made it look like it looked up the registry
info even when you had a TZ environment, but it doesn't actually do that.
- Improved the handling of loggers.
- Fixed a bug in the new assert_tz_offset method.
- Change how the system offset is calculated to deal with non-DST
temporary changes, such as Ramadan time in Morocco.
- Change the default to only warn when the timezone offset and system
offset disagree (but still not even warn if TZ is set)
- Add the assert_tz_offset() method to the top level for those who want
to explicitly check and fail.
- Removed the deprecation shim.
Signed-off-by: Wang Mingyu <wangmy@fujitsu.com>
Signed-off-by: Khem Raj <raj.khem@gmail.com>
