EnviroDIY/ModularSensors: v0.19.6: Modem Improvements & ADS1X15 Generalization

The EnviroDIY ModularSensors library gives environmental sensors a common interface of functions for use with Arduino-framework data loggers, such as the EnviroDIY Mayfly Logger. The ModularSensors library is specifically designed to support wireless, solar-powered environmental data logging applications that: Retrieve data from many physical sensors; Save that data to a SD memory card; Transmit that data wirelessly to a web server; and Put the processor, sensors and all other peripherals to sleep between readings to conserve power. The ModularSensors library coordinates these tasks by "wrapping" native sensor libraries into a common interface of functions and returns. These wrapper functions serve to harmonize and simplify the process of iterating through and logging data from a diverse set of sensors and variables. Using the common sensor and variable interface, the library attempts to optimize measurement timing as much as possible to reduce logger "on-time" and power consumption. Although this library was written primarily for the EnviroDIY Mayfly data logger board, it is also designed to be compatible with a variety of other Arduino-based boards as well. New in v0.19.6: Modem improvements & ADS1X15 generalization New Features: Added ADS1015 as an optional analog to digital converter (ADC) for boards other than the Mayfly Improvements: Modem waits for signal strength return before sending data Other modem tweaks Restructuring of data publishers Bug Fixes Fixed bug with ADS1115 for M0/SAM21 New in v0.19.3: Bug fix and example re-working (released in January 15, 2019): Fixes bug in sending data to the WikiWatershed / Monitor My Watershed data sharing portal. Re-works the examples to remove duplication between them. New in v0.19.2: Decreased Data Consumption (released Dec 22, 2018) New Features: Added ThingSpeak support via MQTT (PubSubClient is now a required dependency) Added support for TI INA219 thanks to @neilh21 (Adafruit INA219 library is now a required dependency) Improvements: Reduced data consumption (by half in one test), by creating an outgoing text buffer. Note : the default buffer size is quite large, decrease it to decrease program memory size. Refactored data publishers as a new class rather than subclasses of logger