py-opc v1.1.0 beta release

A few minor changes were made to the API including:

• _calculate_bin_boundary was changed to lookup_bin_boundary
• calculate_bin_boundary was added

Support was (finally) added for calculating the bin boundaries in real values rather than ADC values. Check the documentation for instructions and documentation.

What else was done in this release?

• #32 A version badge was added
• #17 New assertions were added to prevent errors in class initiation
• #5 ADC unit conversion was added