Merge pull request #14 from ThaneGallo/Reference-Designator-Update Reference Designator and Footprint Updates

Reference Designator and Footprint Updates Changed almost all reference designators to group similar components by what filter they are a part of and what value they have. Need to: - Sort symbol data for ADC and OpAmps to correct folders - get footprint files for ADC and OpAmps

Merge pull request #13 from ThaneGallo/JC-connectors-edit added connectors for electrode inputs and revamped battery connectors

added audio jack connectors for emg connections

removed sda scl pullups, removed electrode connectors to make space for proper connectors later

added connectors for electrode inputs and revamped battery connectors

Merge pull request #12 from ThaneGallo/Input-Power-and-Output-Connector-changes Filter abstraction and Input output connectors

Filter abstraction and Input output connectors Abstracted filters so there are 4 signal paths to go to ADC. Added input and output connectors.

Merge pull request #11 from ThaneGallo/merge-fix-2-1 merge fix 2?

merge fix 2