test/syntaxhighlighting.clay: add tests for some missing cases: chained static indexes (x.0.1.2), "callbyname" keyword, f/f32/f64 suffixes on float literals, \123 octal escapes in strings, pattern guards
test/syntaxhighlighting.clay: add tests for some missing cases: chained static indexes (x.0.1.2), "callbyname" keyword, f/f32/f64 suffixes on float literals, \123 octal escapes in strings, pattern guards

aep/clay,iamrekcah/clay,aep/clay,jckarter/clay,iamrekcah/clay,iamrekcah/clay,jckarter/clay,mario-campos/clay,aep/clay,jckarter/clay,aep/clay,iamrekcah/clay,iamrekcah/clay,mario-campos/clay,jckarter/clay,mario-campos/clay,jckarter/clay,aep/clay,jckarter/clay,aep/clay,mario-campos/clay,mario-campos/clay