Merge pull request #13 from sergey-tihon/master

New logo was added
Tail recursive implementation of Heap.Tail
Merge pull request #17 from adbrowne/master

Tail recursive implementation of Heap.Tail
New nuget.exe 2.8.2
Add release notes
Use Paket
Add Nuget.Commandline
Add Fake
Add Fake
Merge branch 'master' of https://github.com/fsprojects/FSharpx.Collections
Add Portable47 to NuGet
fix build.fsx
fix travis build
update travis
fix packet targets
fix packet targets
update appveyor
Privte=True for project refs
test assemblies need private refs
updates for appveyor