Adding length to PrintMessage and get data as dictionary

[aguirrel]

Hi!

First all, thanks for this great lib!

I did some changes that could be useful.

This PR has 3 things:

• Addes length to text printed in PrintMessage.
• Added DictMessage to class to get all data as dictionary.
• Fixes some odd error on importing IsoSpecs

Best regards,

[alxnik]

Thanks for taking the time to improve the library. I'll try to find some time review the PR

[rjarce]

Hi!

Seconding this pull request. Commit 58a0a9f fixes import problems from external apps/modules.

Thanks, @alxnik and @aguirrel!