Provide more utility methods and types for time zones

[GoogleCodeExporter]

It can be useful to determine whether two time zones are equivalent over some 
interval, within certain criteria (e.g. you may or may not care about names, 
and you may or may not want to distinguish between "standard + DST" and "wall 
offset").

Likewise it can also be useful to create a sequence of ZoneIntervals and 
transition points within a certain interval.

These are not *too* hard to do correctly, but there are a few corner cases to 
get right. It would be nice to supply them ourselves.

(Having a DateTimeZoneEqualityComparer would also allow for better 
serialization tests...)

Original issue reported on code.google.com by jonathan.skeet on 17 Jan 2013 at 9:45

[GoogleCodeExporter]

Revision 6347cc315cea and revision acf149cdf074 each provide at least part of 
what we want here - possibly all of it. API needs reviewing before making it 
public though.

Original comment by jonathan.skeet on 20 Jan 2013 at 9:18

[GoogleCodeExporter]

When you say "making it public", you mean "releasing 1.1", right? :-)  The 
classes and suchlike are public anyway.

Original comment by malcolm.rowe on 20 Jan 2013 at 9:20

[GoogleCodeExporter]

ZoneEqualityComparer is currently an internal class. Looks like I made 
GetAllZoneIntervals public when I meant it to be internal. The point of making 
them internal would be to not gate the 1.1 release on getting them into a 
shippable state... although I strongly suspect we will be able to anyway; 
especially GetAllZoneIntervals which is pretty simple.

Original comment by jonathan.skeet on 20 Jan 2013 at 9:22

[GoogleCodeExporter]

Original comment by malcolm.rowe on 25 Jan 2013 at 9:24

• Added labels: Type-Enhancement, Milestone-1.1-consider

[GoogleCodeExporter]

This is implemented, and will be reviewed as part of issue 173.

Original comment by jonathan.skeet on 21 Mar 2013 at 2:50

• Changed state: Fixed

[GoogleCodeExporter]

Original comment by malcolm.rowe on 6 Apr 2013 at 9:08

• Added labels: Milestone-1.1.0
• Removed labels: Milestone-1.1-consider