Add firmware patches support

The most significant feature is a support for loading patches. See this discussion: #66 for more details.

Additionally:

• adjusted buffer size for examples,
• volume balance enhancement,
• low level write register method.

Thanks to: @LucasMaciuga, @fabitom, @CelliesProjects

Add support for SCI_DECODE_TIME

• add support for reading and clearing decoded time by SCI_DECODE_TIME (#41),
• update documentation,
• update examples for compatibility with both ESP8266 and ESP32 (#40).

Publish the latest library status to PlatformIO

1.1.1

Bump version (#33)

Extend API

• extended API with new isChipConnected() method, a new lightweight method to check if the VS1053 chip is connected, more details here: #24 (thanks to @wmarkow),
• removed the cache from setVolume() method which caused issues in some usage scenarios, more details here: #28 (thanks to @wmarkow),
• additionally the sound used by the example sketch has been replaced with a shorter one as described here: #31 (thanks to @rpoisel).

Use "SemVer" compliant library version number

This release fixes only library version number.

As Arduino IDE requires version number which is SemVer compliant, it was changed according to SemVer's specification.

Add web radio example

#20 A simple stream handler to play web radio stations using ESP8266

Clean up unused 3rd party dependency

Clean up (#16)

* Remove unused dependency from Platformio's library.json

* Bump version for the next release

Remove ArduinoLog dependency

To get rid of ArduinoLog 3rd party dependency. To make use of ESP Arduino framework built in logger.
Depending on the platform it's the one which comes from Arduino core for ESP32 or Arduino core for ESP8266. To update the documentation accordingly.

New sound for example sketches

The examples folder has been updated with a new sound which is
less misleading than previous one ("tok tok"). Now it is "ding" sound
which should clearly determine successful run.

Update version indicators related to PlatformIO repository

Updated version indicators to make the latest library version
searchable and installable from PlatformIO repository.