Format files and add .gitattributes and .clang-format.

.clang-format

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+---
+# We'll use defaults from the LLVM style, but with 4 columns indentation.
+BasedOnStyle: LLVM
+IndentWidth: 2
+---
+Language: Cpp
+DeriveLineEnding: false
+UseCRLF: true
+DerivePointerAlignment: false
+PointerAlignment: Left
+AlignConsecutiveAssignments: true
+AllowShortFunctionsOnASingleLine: Inline
+AllowShortIfStatementsOnASingleLine: Never
+AllowShortLambdasOnASingleLine: Empty
+AlwaysBreakTemplateDeclarations: Yes
+AccessModifierOffset: -2
+AlignTrailingComments: true
+SpacesBeforeTrailingComments: 2
+NamespaceIndentation: Inner
+MaxEmptyLinesToKeep: 1
+BreakBeforeBraces: Custom
+BraceWrapping:
+  AfterCaseLabel: false
+  AfterClass: true
+  AfterControlStatement: false
+  AfterEnum: true
+  AfterFunction: true
+  AfterNamespace: true
+  AfterStruct: true
+  AfterUnion: true
+  AfterExternBlock: true
+  BeforeCatch: false
+  BeforeElse: false
+  BeforeLambdaBody: false
+  BeforeWhile: false
+  IndentBraces: false
+  SplitEmptyFunction: false
+  SplitEmptyRecord: false
+  SplitEmptyNamespace: true
+ColumnLimit: 88
+ForEachMacros: ['Q_FOREACH', 'foreach']

.gitattributes

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+# Set the default behavior, in case people don't have core.autocrlf set.
+* text=auto
+
+# Explicitly declare text files you want to always be normalized and converted
+# to native line endings on checkout.
+*.cpp text eol=crlf
+*.h text eol=crlf