=> ->
class if else
switch case
return exit
try catch
finally raise

----------------------------------------------------

[
	["keyword", "=>"], ["keyword", "->"],
	["keyword", "class"], ["keyword", "if"], ["keyword", "else"],
	["keyword", "switch"], ["keyword", "case"],
	["keyword", "return"], ["keyword", "exit"],
	["keyword", "try"], ["keyword", "catch"],
	["keyword", "finally"], ["keyword", "raise"]
]

----------------------------------------------------

Checks for keywords.