Allow projects to compile on Visual Studio 2019

.editorconfig

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+# EditorConfig is awesome:http://EditorConfig.org
+
+# top-most EditorConfig file
+root = true
+
+# Don't use tabs for indentation.
+[*]
+indent_style = space
+# (Please don't specify an indent_size here; that has too many unintended consequences.)
+
+# Code files
+[*.{cs,csx,vb,vbx}]
+indent_size = 4
+insert_final_newline = true
+charset = utf-8-bom
+
+# Xml project files
+[*.{csproj,vbproj,vcxproj,vcxproj.filters,proj,projitems,shproj}]
+indent_size = 2
+
+# Xml config files
+[*.{props,targets,ruleset,config,nuspec,resx,vsixmanifest,vsct}]
+indent_size = 2
+
+# JSON files
+[*.json]
+indent_size = 2
+
+# Dotnet code style settings:
+[*.{cs,vb}]
+# Sort using and Import directives with System.* appearing first
+dotnet_sort_system_directives_first = true
+# Avoid "this." and "Me." if not necessary
+dotnet_style_qualification_for_field = false:suggestion
+dotnet_style_qualification_for_property = false:suggestion
+dotnet_style_qualification_for_method = false:suggestion
+dotnet_style_qualification_for_event = false:suggestion
+
+# Use language keywords instead of framework type names for type references
+dotnet_style_predefined_type_for_locals_parameters_members = true:suggestion
+dotnet_style_predefined_type_for_member_access = true:suggestion
+
+# Suggest more modern language features when available
+dotnet_style_object_initializer = true:suggestion
+dotnet_style_collection_initializer = true:suggestion
+dotnet_style_coalesce_expression = true:suggestion
+dotnet_style_null_propagation = true:suggestion
+dotnet_style_explicit_tuple_names = true:suggestion
+
+# CSharp code style settings:
+[*.cs]
+# Prefer "var" everywhere
+csharp_style_var_for_built_in_types = true:suggestion
+csharp_style_var_when_type_is_apparent = true:suggestion
+csharp_style_var_elsewhere = true:suggestion
+
+# Prefer method-like constructs to have a block body
+csharp_style_expression_bodied_methods = false:none
+csharp_style_expression_bodied_constructors = false:none
+csharp_style_expression_bodied_operators = false:none
+
+# Prefer property-like constructs to have an expression-body
+csharp_style_expression_bodied_properties = true:none
+csharp_style_expression_bodied_indexers = true:none
+csharp_style_expression_bodied_accessors = true:none
+
+# Suggest more modern language features when available
+csharp_style_pattern_matching_over_is_with_cast_check = true:suggestion
+csharp_style_pattern_matching_over_as_with_null_check = true:suggestion
+csharp_style_inlined_variable_declaration = true:suggestion
+csharp_style_throw_expression = true:suggestion
+csharp_style_conditional_delegate_call = true:suggestion
+
+# Newline settings
+csharp_new_line_before_open_brace = anonymous_types,accessors,object_collection_array_initalizers,methods,properties,types
+csharp_new_line_before_else = false
+csharp_new_line_before_catch = false
+csharp_new_line_before_finally = false
+csharp_new_line_before_members_in_object_initializers = true
+csharp_new_line_before_members_in_anonymous_types = true

.gitattributes

@@ -1,50 +1,45 @@
-*.doc  diff=astextplain
-*.DOC	diff=astextplain
-*.docx	diff=astextplain
-*.DOCX	diff=astextplain
-*.dot	diff=astextplain
-*.DOT	diff=astextplain
-*.pdf	diff=astextplain
-*.PDF	diff=astextplain
-*.rtf	diff=astextplain
-*.RTF	diff=astextplain
+# Catch all for anything we forgot. Add rules if you get CRLF to LF warnings.
+* text=auto
 
-*.jpg  	binary
-*.png 	binary
-*.gif 	binary
+# Text files that should be normalized to LF in odb.
+*.cs     text eol=lf diff=csharp
+*.xaml   text
+*.config text
+*.c      text
+*.h      text
+*.cpp    text
+*.hpp    text
 
-*.cs text diff=csharp 
-*.vb text
-*.c text
-*.cpp text
-*.cxx text
-*.h text
-*.hxx text
-*.py text
-*.rb text
-*.java text
-*.html text
-*.htm text
-*.css text
-*.scss text
-*.sass text
-*.less text
-*.js text
-*.lisp text
-*.clj text
-*.sql text
-*.php text
-*.lua text
-*.m text
-*.asm text
-*.erl text
-*.fs text
-*.fsx text
-*.hs text
+*.sln     text
+*.csproj  text
+*.vcxproj text
 
-*.csproj text merge=union 
-*.vbproj text merge=union 
-*.fsproj text merge=union 
-*.dbproj text merge=union 
-*.sln text eol=crlf merge=union 
+*.md       text
+*.tt       text
+*.sh       text
+*.ps1      text
+*.cmd      text
+*.bat      text
+*.markdown text
+*.msbuild  text
 
+
+# Binary files that should not be normalized or diffed
+*.png    binary
+*.jpg    binary
+*.gif    binary
+*.ico    binary
+*.rc     binary
+
+*.pfx    binary
+*.snk    binary
+*.dll    binary
+*.exe    binary
+*.lib    binary
+*.exp    binary
+*.pdb    binary
+*.sdf    binary
+*.7z     binary
+
+# Generated file should just use CRLF, it's fiiine
+SolutionInfo.cs text eol=crlf diff=csharp

.github/ISSUE_TEMPLATE.md

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+_We will close your issue without comment if you delete or do not fill out the issue checklist and provide ALL the requested information. This repository's issues are reserved for feature requests and bug reports. For support questions, please ask on StackOverflow: https://stackoverflow.com/questions/tagged/splat_
+
+_Please delete this note before pressing the submit button_
+
+**Do you want to request a *feature* or report a *bug*?**
+
+
+
+**What is the current behavior?**
+
+
+
+**If the current behavior is a bug, please provide the steps to reproduce and if possible a minimal demo of the problem**
+
+
+
+**What is the expected behavior?**
+
+
+
+**What is the motivation / use case for changing the behavior?**
+
+
+
+**Which versions of ReactiveUI, and which platform / OS are affected by this issue? Did this work in previous versions of ReativeUI? Please also test with the [latest stable](https://www.nuget.org/profiles/reactiveui) and [development snapshot](https://reactiveui.net/docs/getting-started/installation/nuget-packages/development-package-feed)**
+
+
+
+**Other information (e.g. stacktraces, related issues, suggestions how to fix)**

.github/PULL_REQUEST_TEMPLATE.md

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+**What kind of change does this PR introduce? (Bug fix, feature, docs update, ...)**
+
+
+
+**What is the current behavior? (You can also link to an open issue here)**
+
+
+
+**What is the new behavior (if this is a feature change)?**
+
+
+
+**What might this PR break?**
+
+
+
+**Please check if the PR fulfills these requirements**
+- [ ] Tests for the changes have been added (for bug fixes / features)
+- [ ] Docs have been added / updated (for bug fixes / features)
+
+**Other information**:
+

.github/stale.yml

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+# Number of days of inactivity before an issue becomes stale
+daysUntilStale: 60
+
+# Number of days of inactivity before a stale issue is closed
+daysUntilClose: 7
+
+# Issues with these labels will never be considered stale
+exemptLabels:
+  - up-for-grabs
+  - starters
+  - bug
+  - cla-signed
+  - cla-already-signed
+  - proposal
+  - contributor-experience
+  - developer-experience
+  - ¯\_(ツ)_/¯
+
+# Label to use when marking an issue as stale
+staleLabel: waiting-for-response-or-contribution
+
+# Comment to post when marking an issue as stale. Set to `false` to disable
+markComment: >
+  This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. We do this because it helps reduce the workload of our extremely busy maintainers. If you want this issue progressed faster please start talks with a maintainer with how you can help out. There are so many ways to contribute to open-source and the most valued are often not code related. We are always looking for more help and look after those who stick around. Say howdy to one of the maintainers or browse https://reactiveui.net/contribute/ for ideas on where to start your journey.
+# Comment to post when closing a stale issue. Set to `false` to disable
+closeComment: false