Merge pull request #221 from keepwn/develop

Fix some bugs and add new function BeginEdit
Update nuspec for xamarin.mac v2, now that it passes the correct platform identifier.
Register overridden OnClick methods when subclassing LinkButton
Update build to attempt to allow mono to package nupkg, still not there yet (can't clean and build without errors).
Add ability to patch AssemblyInformationalVersion of GlobalAssemblyInfo.cs when building
Update breaking changes
Add Mac64 build of the test app
WinForms: Fix issues with initial control positioning within scrollable controls, and make sure layouts are resumed before being shown.
- Fix Mac64 nuspec to include the correct assemblies
- Add Platforms.XamMac2 identifier
Merge pull request #223 from keepwn/develop

Fix TextAreaHandler in Mac
WinForms: Tweak suspend/resume to only apply to containers and fix a few bugs mainly when using a scrollable where resume wouldn't happen in the right order
WinForms: When ComboBox is set to use a background color, show the background color on the combo box itself, not on the items in the drop down list
WinForms: Fix tabbing through controls within a scrollable
WinForms: Adjust initial size of ColorPicker
iOS: Add Grid.BeginEdit to fix build
XamMac2: Fix odd error when creating system fonts
Update nuspec and project files to allow packaging using mono and xbuild.
- Include shared Common.targets and Build.targets to customize the build for all projects
- Includes Eto.Build.targets from same level as root folder (if exists), similar to Eto.Common.targets for user-supplied targets
- Update WinRT to VS2013/Windows 8.1
- Nuget packages now require exact version of other eto dependencies to avoid any conflict of versions
Add helpers for each platform to get the native control with a control.ToNative() extension method.
Fix CI build when creating utilities assembly in msbuild
Fix setting initial position of splitter when added to an existing control dynamically. Fixes #224