optimized file system watching
improve file system watching: it listens for all events including Rename and Delete and filter duplicates out
Merge pull request #283 from vasily-kirichenko/master

Optimize file system watching
further optimized the file system watching
Merge pull request #286 from vasily-kirichenko/master

Further optimized the file system watching
fix file system watching in case when a file is changed outside VS
Merge pull request #287 from vasily-kirichenko/master

Fix: file system watching does not invalidates providers in case when a file is changed outside VS
Http Compression support for PCLs (fixes #192)

*Adds dependency on ZLib.Portable
Fixes to build.fsx and update assemblyinfos
Prevent NuGet from referencing the .DesignTime assembly (fixes #261)
Merge pull request #290 from ovatsus/PortableCompression

Http Compression support for PCLs
Reference System.Xml.Linq in Nuget package (fixes #291)