String methods
1) length
2) trim()
3) trimStart()
4) trimEnd()
5) replace(old: String, new: String, ignoreCase: Boolean = false)
6) isEmpty()
7) isNotEmpty()
8) isBlack()
9) isNotBlack()
10) contains(other: String)
11) substr(start: Int, length: Int)
12) subString(startIndex: Int, endIndex: Int)
Additional changes:
13) for loop that iterates over string :
for(i in "some_string") {}
14) UI/UX improvements when using Shift+Ctrl+(⬅️➡️)
15) Updated documentation for String.