Add Marlin firmware. Has initial configuration for CoreXY and 1 servo.

Update CAD file with improved clearances for Pilot G2 cartridge clearances after first print.

Marlin Firmware/buildroot/share/git/mfinfo

@@ -0,0 +1,61 @@
+#!/usr/bin/env bash
+#
+# mfinfo
+#
+# Provide the following info about the working directory:
+#
+#   - Remote (upstream) Org name (MarlinFirmware)
+#   - Remote (origin) Org name (your Github username)
+#   - Repo Name (Marlin, MarlinDocumentation)
+#   - PR Target branch (bugfix-1.1.x, bugfix-2.0.x, dev-2.1.x, etc.)
+#   - Branch Arg (the branch argument or current branch)
+#   - Current Branch
+#
+
+CURR=$(git branch 2>/dev/null | grep ^* | sed 's/\* //g')
+[[ -z $CURR ]] && { echo "No git repository here!" 1>&2 ; exit 1; }
+[[ $CURR == "(no"* ]] && { echo "Git is busy with merge, rebase, etc." 1>&2 ; exit 1; }
+
+REPO=$(git remote get-url upstream 2>/dev/null | sed -E 's/.*\/(.*)\.git/\1/')
+[[ -z $REPO ]] && { echo "`basename $0`: No 'upstream' remote found. (Did you run mfinit?)" 1>&2 ; exit 1; }
+
+ORG=$(git remote get-url upstream 2>/dev/null | sed -E 's/.*[\/:](.*)\/.*$/\1/')
+[[ $ORG == MarlinFirmware ]] || { echo "`basename $0`: Not a Marlin repository." 1>&2 ; exit 1; }
+
+FORK=$(git remote get-url origin 2>/dev/null | sed -E 's/.*[\/:](.*)\/.*$/\1/')
+
+# Defaults if no arguments given
+BRANCH=$CURR
+INDEX=1
+
+while [[ $# -gt 0 ]]; do
+  opt="$1" ; shift ; val="$1"
+
+  IFS='=' read -a PARTS <<<"$opt"
+  [[ "${PARTS[1]}" != "" ]] && { EQUALS=1 ; opt="${PARTS[0]}" ; val="${PARTS[1]}" ; }
+
+  GOODVAL=1
+  if [[ "$val" =~ ^-{1,2}.* || ! "$opt" =~ ^-{1,2}.* ]]; then
+    GOODVAL=0
+    val=""
+  fi
+
+  case "$opt" in
+    -*|--*) MORE="$MORE$opt " ; [[ $EQUALS == 1 ]] && MORE="$MORE=$val" ;;
+     1|2|3) INDEX=$opt ;;
+         *) BRANCH="$opt" ;;
+  esac
+
+done
+
+case "$REPO" in
+  Marlin              ) TARG=bugfix-2.0.x ; [[ $INDEX == 1 ]] && TARG=bugfix-1.1.x ; [[ $INDEX == 3 ]] && TARG=dev-2.1.x ;;
+  Configurations      ) TARG=import-2.0.x ;;
+  MarlinDocumentation ) TARG=master ;;
+esac
+
+[[ $BRANCH =~ ^[123]$ ]] && USAGE=1
+
+[[ $USAGE == 1 ]] && { echo "usage: `basename $0` [1|2|3] [branch]" 1>&2 ; exit 1 ; }
+
+echo "$ORG $FORK $REPO $TARG $BRANCH $CURR $MORE"