message: Fix declarations for index.d.ts
  This commit should fix typescript compiler errors.
  Resolves:
  See also:
diff: @@ -31,6 +31,10 @@ declare namespace FeathersErrors {
  constructor(msg: string | Error, data?: any);
  }
  + class Timeout extends FeathersError {
  + constructor(msg: string | Error, data?: any);
  + }
  +
  class Conflict extends FeathersError {
  constructor(msg: string | Error, data?: any);
  }
  @@ -65,9 +69,29 @@ declare namespace FeathersErrors {
  }
  declare namespace FeathersErrors {
  - types: FeathersErrors
  + interface ErrorContainer {
  + FeathersError
  + BadRequest
  + NotAuthenticated
  + PaymentError
  + Forbidden
  + NotFound
  + MethodNotAllowed
  + NotAcceptable
  + Timeout
  + Conflict
  + LengthRequired
  + Unprocessable
  + TooManyRequests
  + GeneralError
  + NotImplemented
  + BadGateway
  + Unavailable
  + }
  +
  function convert(error: any): FeathersError
  - errors: FeathersErrors
  + const types: ErrorContainer
  + const errors: ErrorContainer
  }
  -export = FeathersErrors
  +export = FeathersErrors;
  