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).