Fix readme and rever test call for release (xonsh#4075)

The rever command hasn't been tested with the new parameters to
`run-tests.xsh` (spoiler alert, it breaks).

Also converted the `raw` block to regular RST since PyPI doesn't allow
`raw` directives in the `long_description` on upload to PyPI

Add $HISTCONTROL=ignorespace support (xonsh#4062)

* Add $HISTCONTROL=ignorespace support

* Add news and fix formatting

* Move ignore space to happend in append and fix test bugs

* invert conditional

* remove leftover debug info

Updated CHANGELOG for 0.9.24

Updated CHANGELOG for 0.9.23

Updated CHANGELOG for 0.9.22

Updated CHANGELOG for 0.9.21

Updated CHANGELOG for 0.9.20

Updated CHANGELOG for 0.9.19

Updated CHANGELOG for 0.9.18

Updated CHANGELOG for 0.9.17