platformio 2.10.3

[ivankravets]

• Have you followed the guidelines in our Contributing document?
• Have you checked to ensure there aren't other open Pull Requests for the same formula update/change?
• Have you built your formula locally prior to submission with brew install <formula> (where <formula> is the name of the formula you're submitting)?
• Does your submission pass brew audit --strict --online <formula> (after doing brew install <formula>)?

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2.10.3 (2016-06-15)

• Added support for ST Nucleo L031K6 board to ARM mbed framework
• Process build_unflags option for ARM mbed framework
• Updated Intel ARC32 Arduino framework to v1.0.6
  (issue #695)
• Improved a check of program size before uploading to the board
• Fixed issue with ARM mbed framework -u _printf_float and
  -u _scanf_float when parsing $LINKFLAGS
• Fixed issue with ARM mbed framework and extra includes for the custom boards,
  such as Seeeduino Arch Pro

[DomT4]

Merged in d097639. Thanks again @ivankravets! 😺