Merge pull request #113 from Neotron-Compute/center-tracks-under-sockets Center tracks under sockets

Increase track-hole clearance. Was set to the value for track-pad clearance.

Ensure tracks under expansion sockets are centered between the pins.

Merge branch 'release/v1.0.0-rc0' into develop

Merge branch 'release/v1.0.0-rc0'

Update CHANGELOG

Merge pull request #107 from Neotron-Compute/change-codec-crystal Change 12M audio crystal.

Change 12M audio crystal. Adjusted 5V fill around PSU output.

Merge pull request #106 from Neotron-Compute/replace-sd-card Replace SD card

Fix SD card symbol so pads match footprint.