Mention PostgreSQL

It seems worth mentioning explicitly if Dapper works with PostgreSQL or not. I assume it does based on the remark that "it works across all .net ado providers", but am not sure because it's not mentioned explicitly...

Allow passing an IDictionary<string, object> as parameter object

Allows use of IDictionary<string, object> as parameter objects.
I'm assuming that the && was a mistake, and that this logic should
handle both of the types equally well.
Also allows .NET 3.5 to use the IDictionary case.

Revert "Escape column names"

Merge branch 'FixDbStringList' of https://github.com/maurocerutti/dapper-dot-net into maurocerutti-FixDbStringList

Conflicts:
	Dapper NET40/SqlMapper.cs

Fixed regression with sproc tests

Merge branch 'AsyncCrud' of https://github.com/AdamAtDotNet/dapper-dot-net into AdamAtDotNet-AsyncCrud

Added async/await to Dapper.Rainbow - .Net 4.5 Hooray \o/

Merge branch 'arbitrary-multi-maps' of https://github.com/Polylytics/dapper-dot-net into Polylytics-arbitrary-multi-maps

Conflicts:
	Dapper NET45/SqlMapperAsync.cs

Merge branch 'arbitrary-multi-maps' of https://github.com/Polylytics/dapper-dot-net into Polylytics-arbitrary-multi-maps

Apply recent changes (output callbacks)

Conflicts:
	Dapper NET45/SqlMapperAsync.cs

Issue 138: FSharp.Core references, plus fix up a prompt on Dapper.Contrib.Tests

Project URL updated to point at github

Escape column names

Investigate issue 157 (unable to reproduce) - but also found and fixed i...

Investigate issue 157 (unable to reproduce) - but also found and fixed issue with subsequent query if reader not fully closed down

Fix detached head

Avoid type-name conflicts causing cache conflicts (makes the cache per-T; also avoids locking on the happy-path)

Added support for expression-based output parameter setting

Depends on Issue 174
https://code.google.com/p/dapper-dot-net/issues/detail?id=174

.. the original one is linked in.

I kept my hands off Sam's original Code as much as possible, only made
the two major classes partial and added the .Net 4.5 Async other half in
the new project (basically what Dapper NET45 does to Dapper).