2.0.5 - Exposed the buffer status.

const char *bufferStatus();

Returns 0/0 if there is no buffer.
Otherwise returns something like 4096/65536 which means 4kB waiting in a 64kB buffer.
A buffer will only be allocated if there is enough free psram.

NOTE: When compiling for a board with psram use the following build flags:

-mfix-esp32-psram-cache-issue
-mfix-esp32-psram-cache-strategy=memw

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Full Changelog: 2.0.4...2.0.5