Decks for each card game are stored in <Card Game Name>/decks.txt.
Storing the version history of decks I build will allow me to revert back if new modifications don't work.
Version numbers are formatted similarly to Semantic Versioning 2.0.0.
# Name: <Name>
# Based on: <Deck Name/Description> (<Link/Source>)
# Description {
<Description>
}
# Version: <SemVer Version>
<Number of Copies> <Card Name> <Card-ID>
...
<Number of Copies> <Card Name> <Card-ID>