* remove leading slashes in `use` clauses
* remove spaces inside parenthesis
* ensure one blank line after the `use` statement
* ensure cast are written in lower case
* fix whitespace around the keyword of a class
* remove spaces after function call
* remove trailing whitespace
* standardize spaces around ternary operator
* ensure php keywords are in lower case
* remove whitespace before closing semicolon
* ensure whitespace after each comma in array
* ensure `true`, `false`, and `null` are lower case
Arkady