bump version to 1.2.1 #39

	# This workflow will install Python dependencies, run tests and lint with a single version of Python
	# For more information see: https://help.github.com/actions/language-and-framework-guides/using-python-with-github-actions

	name: PlatformIO Build

	on:
	push:
	branches: [ master, rel1.1 ]
	pull_request:
	branches: [ master, rel1.1 ]

	jobs:
	build:

	runs-on: ubuntu-latest

	strategy:
	matrix:
	example:
	- "examples/PZEMHardSerial"
	- "examples/PZEMSoftwareSerial"
	- "examples/PZEMChangeAddress"
	- "examples/PZEMMultiDevice"

	steps:
	- uses: actions/checkout@v2
	- name: Set up Python 3.9
	uses: actions/setup-python@v2
	with:
	python-version: 3.9
	- name: Install dependencies
	run: \|
	python -m pip install --upgrade pip
	pip install platformio
	pio update
	- name: Build with PlatformIO
	env:
	PLATFORMIO_CI_SRC: ${{ matrix.example }}
	run: \|
	pio ci -l ./ -c ${{ matrix.example }}/platformio.ini

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