(https://github.com/ruby/reline/pull/782)

https://github.com/ruby/reline/commit/cbf213291c

(https://github.com/ruby/reline/pull/765)

* use IO's encoding

* refactoring

* remove unused encoding params

* (for retriggering CI) remove unused encoding params

https://github.com/ruby/reline/commit/f09772adab

(https://github.com/ruby/reline/pull/614)

* Re-architecture LineEditor's internal state and rendering

* Fix test related to LineEditor re-architecture

* Bump to 0.5.0.pre.1

* Hide cursor only when updating screen. Frequent hide&show makes cursor flickering.

* Simplify rerender call from reline.rb

* Simplify handle_cleared

It only need to clear screen. line_editor.rerender will be called later.

* Add description of updating pasting_state inserts continuous_insertion_buffer

* Use meaningful block parameter

Co-authored-by: Stan Lo <stan001212@gmail.com>

* Fix use of `@cursor_y`

Fix bug updating `@cursor_y`. Do not use `@cursor_y` while updating dialog because it is not current cursor position but cursor position at last rendered time.

* Remove useless instance_variable_set in test

These instance variables are already removed from LineEditor

* Always initialize instance variables to avoid ruby 2.7 warning, remove unused instance variable

* Call update_dialogs from reline.rb before first render

* Combine state representing rendered screen information into `@rendered_screen`

* Rename editor_cursor_ to wrapped_cursor

It represents cursor position of word wrapped whole content

* Remove unused code, tweak, add comment

---------

https://github.com/ruby/reline/commit/3fa376217d

Co-authored-by: Stan Lo <stan001212@gmail.com>

(https://github.com/ruby/reline/pull/566)

* Avoid referencing IOGate from IOGate classes

The only time those classes being used is when themselves being the IOGate.
So when referencing to IOGate, it's better to use `self` instead.

* Avoid referencing to IOGate from LineEditor directly

* Avoid referencing to IOGate from Core directly

* Reference to Reline.core directly

* Replace Reline::IOGate with Reline.core.io_gate

https://github.com/ruby/reline/commit/1f469de90c

The command prompt on Windows always uses Unicode to take input and print
output but most Reline implementation depends on Encoding.default_external.
This commit introduces an abstracted structure about the encoding of Reline.