0.1.3 released -- suitable for google hosts

🌚 first release

• add support for custom log format (via Ruby eval&ENV)
• add support for custom head text (vial ENV)
• puts modules_with_desc.to_s in output
• misc improvement

Ruby info.

WARNS:

./hostsgen.rb:193: warning: assigned but unused variable - gen
./hostsgen.rb:264: warning: `-' after local variable or literal is interpreted as binary operator
./hostsgen.rb:264: warning: even though it seems like unary operator
./hostsgen.rb:254: warning: assigned but unused variable - desc
./hostsgen.rb:290: warning: statement not reached

• ruby version: ruby 2.4.2p198 (2017-09-14 revision 59899) [x86_64-linux]