v6.0.0: Merge pull request #148 from biancode/major_update_serialport

Breaking changes:

• upgrade major version of serialport lib

Bugfixes:

• server example bugfixes

v5.4.1: Merge pull request #143 from yaacov/bump-version

backword compatible api changes:

• add close method to server
• add minimal frame size check in rtu buffer

bugfixes:

• add example
• bug fixes

v5.3.2

Fix tcp-server error handling
FIx tcp-buffered-port timeout bug

v5.3.1

bump minor version, add server functions

v5.2.15

Bump bugfix version

v5.2.14

bump bugfix version

v5.2.13

bump bugfix version

v5.2.12

bump bugfix version

v5.2.11

bump bug fix version

v5.2.10

bump bug version