Adjust the spacing for consistency

[ghost]

There are some inconsistency in spacing and I corrected them

corrections

1. templates
   template <class T> ➝ template<class T>

2. classes

   class A  ➝  class A {
   {           };
   };

3. functions

   void foo {  ➝  void foo
   }              {
                  }

4. lambda expressions
   [](buffer& b){ ➝ [](buffer& b) {

---

references

I applied spacing to the following priorities
However, there were cases in which several forms were used in a single document
In such cases, more frequently used forms were applied

1. TC++PL
2. NL: Naming and layout
3. the standard
4. other guidelines such as google c++ style guide

[cubbimew]

seeing as NL.17 recommends "Stroustrup style" as the default, I would say TC++PL would be the golden source here

[ghost]

I could find there is no space between class's constructors and its initializer lists in TC++PL
and so I will make an additional patche for this

For example the space between : and var_ should be removed

as is

class A {
public:
  A(int var) : var_(var)
  {
  }
private:
  int var_;
};

to be

class A {
public:
  A(int var) :var_(var)
  {
  }
private:
  int var_;
};

[hsutter]

Editors call: Thanks!