define 0 amount as still sane, even though we keep ignoring neutral transactions
keep the protection against landsales due to misconfiguration (after sanitizeAmount doesn't filter out 0 amounts anymore)
remove redundant checking
reorder and comment config.lua
add convenience for testing predefined mod availability
fix smart card craft
add plastic card recipe if technic and/or homedecore/pipeworks is available
move wire chatcommand to wire lua file
fix a nil reference of the supervisor check
make sure to initialize the namespace in notifications
resolve nameclash of 'debug'
add direct debits, which allow a creditor with debit priv to request payment from a debitor via /debit chatcommand, who can control, correct and if necessary deny via formspec