Mempool limiter has been introduced in BU 0.12.1
Mempool limiter has been introduced in BU 0.12.1

Use correct BU ver in which mempool limiter's been added, i.e 0.12.1 not
v11.2. While at it remove traling spaces from the entire document.

(this pathc should be backported to `release` branch)

arruah/ensocoin,AllanDoensen/BitcoinUnlimited,Justaphf/BitcoinUnlimited,arruah/ensocoin,BitcoinUnlimited/BitcoinUnlimited,Bitcoin-com/BUcash,Justaphf/BitcoinUnlimited,BitcoinUnlimited/BitcoinUnlimited,Justaphf/BitcoinUnlimited,arruah/ensocoin,BitcoinUnlimited/BitcoinUnlimited,AllanDoensen/BitcoinUnlimited,Justaphf/BitcoinUnlimited,AllanDoensen/BitcoinUnlimited,Justaphf/BitcoinUnlimited,AllanDoensen/BitcoinUnlimited,AllanDoensen/BitcoinUnlimited,Justaphf/BitcoinUnlimited,Bitcoin-com/BUcash,arruah/ensocoin,arruah/ensocoin,Bitcoin-com/BUcash,Bitcoin-com/BUcash,AllanDoensen/BitcoinUnlimited,Bitcoin-com/BUcash,Bitcoin-com/BUcash,arruah/ensocoin,BitcoinUnlimited/BitcoinUnlimited,BitcoinUnlimited/BitcoinUnlimited,BitcoinUnlimited/BitcoinUnlimited