Add initial Antlr4BuildTasks project, copied Antlr4.targets from Antlr3.targets
Sign the Antlr4.Runtime assembly
Suppress warning about overriding Equals but not GetHashCode
Suppress unreachable code warnings
Include "new" modifier on interface methods
Fix attribute target
Fix warning about bit operation on sign-extended operand
static readonly instead of const in TestPerformance
Remove unreferenced branch targets
Remove unreferenced locals
Updated sharpen property annotations in Lexer
Fix switch case open/closed analysis
Merge branch 'sharpen'
Constructors don't inherit visibility
Merge branch 'sharpen'
Lexer.ModeNames is now a property