Proper mouse selection scrolling implementation. Fixes #645 #99

	# This is a basic workflow to help you get started with Actions

	name: CI

	# Controls when the action will run. Triggers the workflow on push or pull request
	# events but only for the master branch
	on:
	push:
	branches: [ master ]
	pull_request:
	branches: [ master ]

	jobs:
	build:
	strategy:
	matrix:
	os:
	- ubuntu-latest
	- windows-latest
	dc:
	- dmd-latest
	- ldc-latest

	runs-on: ${{ matrix.os }}

	steps:
	- name: Setup D compiler
	uses: dlang-community/setup-dlang@v1
	with:
	compiler: ${{ matrix.dc }}

	- name: Checkout source
	uses: actions/checkout@v2

	- name: 'Build & Test'
	run: \|
	# Build and run tests, as defined by `unittest` configuration
	# In this mode, `mainSourceFile` is excluded and `version (unittest)` are included
	# See https://dub.pm/package-format-json.html#configurations
	dub test
	cd examples/example1
	dub build -b=release

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