Add encode_to_hex and decode_from_hex functions

Add can_encode function to validate encodable values

read_array now returns size as third argument

Skip ending type in read_array and read_table functions

Update README example for version 4.0.0

#major Why the fuk am I writing table/array size when we will never g…

…et table.new in gmod

Add set_custom_type_with_id

Merge branch 'master' of github.com:Srlion/sfs

round down color numbers to work correctly when colors have floats, f…

…ixes #6

Merge pull request #7 from TankNut/entity-encoders

Add encoders for Weapon, Vehicle, NextBot and NPC types