Updated the changelog for the v1.0.8 release.
Updated the changelog for the v1.0.8 release.

FooDeas/raspberrypi-ua-netinst,matt2005/raspbian-ua-netinst,yodaaut/raspbian-ua-netinst,racing-tech/rrp-raspi-installer,beylsp/rpi-installer,beylsp/rpi-installer,racing-tech/rrp-raspi-installer