Update secp256k1 requirement from 0.27 to 0.28 #91

	name: Check style

	on:
	pull_request:
	push:
	branches:
	- master
	tags:
	- v*
	paths-ignore:
	- 'README.md'
	jobs:
	## Check stage
	check-fmt:
	name: Check RustFmt
	runs-on: ubuntu-latest
	env:
	RUST_BACKTRACE: full
	steps:
	- name: Cancel Previous Runs
	uses: styfle/[email protected]
	with:
	access_token: ${{ github.token }}
	- name: Checkout sources & submodules
	uses: actions/checkout@master
	with:
	fetch-depth: 5
	submodules: recursive
	- name: Add rustfmt
	run: rustup component add rustfmt
	- name: rust-fmt check
	uses: actions-rs/cargo@master
	with:
	command: fmt
	args: --all -- --check --config merge_imports=true

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