The update() method in SSD1206 should not auto-write the display.
SSD1306: Provide some synchronous wrappers for often used methods.
TMP102: Fix deadlock when using SoftwareI2c.
Reduce endianness test from 4 to 2 bytes.

This test will be optimized away anyway, but just in case.
SSD1306 make initialize return bool about success.
Refactor HMC6343 driver for nested protothreads.

(UNTESTED).
Fix std::abs() use for AVRs in xpcc::Tolerance.
Typos.