0.3.1 release

• update documentation, errors and more
• fix isPressed() to handle I2C communication error as no key pressed.
• update comments.

0.3.0 release

• sync with I2CKeyPad 0.5.0
• implement debounceThreshold
• add constant I2C_KEYPAD8x8_THRESHOLD
• add uint32_t getLastTimeRead()
• update getChar() to support I2C_KEYPAD8x8_THRESHOLD
• update readme.md
• update unit test
• update keywords.txt
• minor edits

0.2.0 release

simplify begin() (#4)

- simplify begin()
- update readme.md
- minor edits.

0.1.1 release

add changelog.md (#2)

0.1.0 release

initial version (#1)

* initial version
* update readme.md