Add bash 4+ version check to pack plugin

bash_it.sh

@@ -1,7 +1,14 @@
 #!/usr/bin/env bash
 # shellcheck source-path=SCRIPTDIR/lib source-path=SCRIPTDIR/scripts
 # shellcheck disable=SC2034
-#
+
+# Requires bash 3.2+ to install and run
+# Skip loading if bash version is too old
+if [[ -n "${BASH_VERSINFO[0]}" ]] && [[ "${BASH_VERSINFO[0]}" -eq 3 ]] && [[ "${BASH_VERSINFO[1]}" -lt 2 ]]; then
+	echo "sorry, but the minimum version of BASH supported by bash_it is 3.2, consider upgrading?" >&2
+	return 1
+fi
+
 # Initialize Bash It
 BASH_IT_LOG_PREFIX="core: main: "
 : "${BASH_IT:=${BASH_SOURCE%/*}}"

install.sh

@@ -1,6 +1,13 @@
 #!/usr/bin/env bash
 # bash-it installer
 
+# Requires bash 3.2+ to install and run
+# Skip loading if bash version is too old
+if [[ -n "${BASH_VERSINFO[0]}" ]] && [[ "${BASH_VERSINFO[0]}" -eq 3 ]] && [[ "${BASH_VERSINFO[1]}" -lt 2 ]]; then
+	echo "sorry, but the minimum version of BASH supported by bash_it is 3.2, consider upgrading?" >&2
+	return 1
+fi
+
 # Show how to use this installer
 function _bash-it-install-help() {
 	echo -e "\n$0 : Install bash-it"