Add a CHANGELOG and chemacs-version variable, bump to 1.0

Merge pull request #24 from jfhbrook/windows

PowerShell port of install.sh

Merge pull request #21 from idmyn/master

fix hyperlink to straight.el repo

Merge pull request #11 from garrison/with-profile-equals

Fix #10, support `--with-profile=profilename`

Merge pull request #9 from jsmestad/patch-1

Fix void symbol error when parsing .emacs-profile

Merge pull request #6 from mandarvaze/patch-2

Added a section for Doom emacs to the README.org