Solutions for rustlings v5.3.0

Name		Name	Last commit message	Last commit date
Latest commit History 1 Commit
clippy		clippy
conversions		conversions
enums		enums
error_handling		error_handling
functions		functions
generics		generics
hashmaps		hashmaps
if		if
intro		intro
iterators		iterators
lifetimes		lifetimes
macros		macros
modules		modules
move_semantics		move_semantics
options		options
primitive_types		primitive_types
smart_pointers		smart_pointers
strings		strings
structs		structs
tests		tests
threads		threads
traits		traits
variables		variables
vecs		vecs
README.md		README.md
quiz1.rs		quiz1.rs
quiz2.rs		quiz2.rs
quiz3.rs		quiz3.rs

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