capitalized all Haxe mentions
replaced all mentions to the standard library with "Haxe Standard Library" and Haxe compiler with "Haxe Compiler"
minor typo and formatting fixes in sections 2.1 to 2.5.2
fixed var initialization so it works for current stable Haxe version (not for one from the future)
document var
add Target Details chapter
document Vector (closes #43)
rename Closure to Local Functions and document it
document new and inline new
omit \todo from markdown generation
export