BookStats

Optimizations and fixes

• Optimized MySQL retrieving data
• Optimized retrieving stats
• Fixed error on player leave when mysql is set to true
• Fixed creating user files even if flat file is not enabled
• Attempting to update my old nasty code
• Fixed memory leak

Added /p option to separate into other pages.

Example:

Book:
- "&b&l{Player}'s Stats!"
- " "
- "&1Balance: &4{Balance}"
- " "
- "&1Kills: &4{Kills}"
- " "
- "&1Deaths: &4{Deaths}"
- " "
- "&1Kill Streak: &4{Killstreak}"
- " "
- "&1Mob Kills: &4{Mobkills}"
- " "
- "&1Block Placed: &4{Blocksplaced}"
- "/p"
- "&1Block Broken: &4{Blocksbroken}"

PlaceholderAPI support and reload command

• Added PlaceholderAPI support
• Added reload command: /bookstats reload

Fixed ConcurrentModificationException

• Fixed ConcurrentModificationException when Death Remove is set to true. Thanks to @zatbel123 for reporting it.