ExMake 0.3.1

This is another alpha-quality release, adding various bug fixes and enhancements.

Fixes:

• Don't run on_load functions repeatedly if a library is loaded multiple times.
• C#/F#: Don't pass the key file as a source file.
• C#: Don't pass .netmodule files as source files.
• Mark the -c flag as a Boolean option.

Enhancements:

• ExMake.Logger is now automatically imported in libraries.
• Add an ExMake.Logger.log_warn/1 function.
• Add a Host library which can detect various details about the host machine.
• Add an ExMake.Lib.require_lib/1 macro for libraries that depend on other libraries.
• Add an ExMake.Utils.format/2 function.
• ExMake.Cache.save_manifest/2 is now append_manifest/2 and supports appending.

Built with Elixir 0.12.4.