Release v1.4.0

This release includes the following:

• Fix the broken desktop shortcut exec command
• Add a -c/--compile option to test script
• Add a -t/--test option to nodebuilder for running unit tests
• Use the most recent tag for the one-liner command and Dockerfiles
• Create a security policy, code of conduct, and issue+PR templates
• Add Docker container usage instructions to the docs
• Behind-the-scenes housekeeping
• UI/UX and testing improvements

What's Changed

• test(ci): use config for markdown link check by @bitcoin-tools in #596
• refactor(ci): standardize the config filenames by @bitcoin-tools in #598
• fix(ui): suppress stderr during macOS compile by @bitcoin-tools in #603
• feat(ui): standardize the output for installing Bitcoin Core by @bitcoin-tools in #600
• fix(ui): typo during autogen compile step by @bitcoin-tools in #606
• test(functional): add -c/--compile option to test_bitcoin by @bitcoin-tools in #601
• fix(shortcut): desktop icon exec command regression by @bitcoin-tools in #609
• refactor(config): make the compile variable a boolean by @bitcoin-tools in #612
• fix(ui): apply unattended mode to macOS arm64 warning by @bitcoin-tools in #613
• chore(ci): bump markdown lint checkout action to v4 by @bitcoin-tools in #615
• feat(ui): when printing errors, only print newline if needed by @bitcoin-tools in #607
• feat(test): add -u/--unit-test command-line option by @bitcoin-tools in #419
• test(ci): use paths-filter to avoid unnecessary runs by @bitcoin-tools in #626
• fix(ci): correct broken git ref in paths-filter by @bitcoin-tools in #628
• fix(ci): checkout repo before paths-filter by @bitcoin-tools in #629
• docs: create pull request template by @bitcoin-tools in #625
• docs: create a security policy by @bitcoin-tools in #623
• docs: create a code of conduct by @bitcoin-tools in #620
• refactor: rename RHEL UBI to Dockerfile_redhat by @bitcoin-tools in #641
• docs(readme): add Docker container instructions to usage section by @bitcoin-tools in #632
• docs(readme): shorten the one-liner and set wget to use latest tag by @bitcoin-tools in #648
• fix(test): use correct filename for Red Hat Dockerfile by @bitcoin-tools in #653
• fix(test): use correct function name for unit test by @bitcoin-tools in #643
• fix(ux): handle case where bitcoin image doesn't exist by @bitcoin-tools in #654
• refactor(structure): rename README.md to TEST.md by @bitcoin-tools in #656
• chore: simplify the pull request issue template by @bitcoin-tools in #657
• chore: simplify the feature request issue template by @bitcoin-tools in #660
• chore: create a documentation issue template by @bitcoin-tools in #661
• refactor(structure): consolidate Dockerfiles into docker/ by @bitcoin-tools in #637
• refactor(structure): consolidate config and data into resources/ by @bitcoin-tools in #638
• feat(ci): only display dependencies review PR comment on failure by @bitcoin-tools in #664
• fix(ui): add -t/--test option to usage section and docs by @bitcoin-tools in #670
• feat(security): run docker containers on latest tag by @bitcoin-tools in #650
• docs(release): update README for v1.4.0 release by @bitcoin-tools in #672

Full Changelog: v1.3.1...v1.4.0