* Add support for Microsoft-specific modifiers

Microsoft-specific modifiers are keywords can be used to modify declarators to form derived types.

The specification for the modifiers themselves is here:
https://docs.microsoft.com/en-us/cpp/cpp/microsoft-specific-modifiers?view=vs-2019

* 0.16.1

* Add a rule for left part of assignment: it'll be helpful to add scoped_name_identifier (c++)

* Inline the assignment_left_expression rule

* #include can be followed by a macro name or a macro call

* In preproc_include, use preproc_call_expression

* Macro definition can contain continuation line in the argument list

* Reset grammar since line continuations are handled globally

Preserve the test.

* Parse expressions in preprocessor #if statement

* Make preproc_expression look like a normal expression

* Hide the wrapper rules
* Alias the rulres to match their corresponding expression rule
* Handle line continuations as extra tokens

Fixes #32

Fixes #31

* Fix multi-statements in for initializer and update parts

* Finally the bug was only in the initializer part

* Fix error with ++L (consequence of support for L strings)

* Update to tree-sitter 0.15.5

Fixes #24

* Handle __attribute__ in function declaration

* Fix tests in examples/

* Remove useless optional

Fix comment containing backslash

Fixes atom/language-c#323

Fixes atom/language-c#312

Fixes tree-sitter/tree-sitter-cpp#24
Fixes tree-sitter/tree-sitter-cpp#34

Fixes tree-sitter/tree-sitter-cpp#30

Fixes tree-sitter/tree-sitter-cpp#29

Fixes tree-sitter/tree-sitter-cpp#26