Updated project system

Replaced the old *.xproj files with the latest *.csproj format.

No new features, but the dependencies have changed to match Dapper: 4.5 -> 4.5.1.

v1.0.4

Merge branch 'master' of https://github.com/andygjp/ExpressionToSql.git

v1.0.3

Adding new package.

v1.0.2

Bumped version