Enable reception for ATtinyX4 and ATtinyX5#59

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cyosp wants to merge 2 commits intosui77:masterfrom

Commits on May 21, 2016

Enable reception for ATtinyX4 and ATtinyX5 using PinChangeInterrupt of
cyosp
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Commits on Dec 30, 2016

Ignore Eclipse project file
cyosp
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