Add history, hints, and tab completion

[ldilley]

Proposed Change(s)

• Add history (and line editing), hints, and tab completion (related to Add history, line editing, and tab completion to the REPL #71) on *BSD, Linux, macOS, and likely other Unix operating systems (AIX, HP-UX, Solaris, etc.). Windows support will come later.
• Fix linking against linenoise library on macOS.
• Label test functions with void parameters.
• Use fchmod() to prevent possible race condition.

[AppVeyorBot]

✅ Build concoct 0.1.157 completed (commit 1eeba22e34 by @ldilley)

[AppVeyorBot]

✅ Build concoct 0.1.57 completed (commit 1eeba22e34 by @ldilley)

[AppVeyorBot]

✅ Build concoct 0.1.158 completed (commit afe1de2cad by @ldilley)

[AppVeyorBot]

✅ Build concoct 0.1.58 completed (commit afe1de2cad by @ldilley)

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❌ Build concoct 0.1.159 failed (commit b9a8b47d10 by @ldilley)

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❌ Build concoct 0.1.59 failed (commit b9a8b47d10 by @ldilley)

[AppVeyorBot]

✅ Build concoct 0.1.60 completed (commit c7bdef92d4 by @ldilley)

[AppVeyorBot]

✅ Build concoct 0.1.160 completed (commit c7bdef92d4 by @ldilley)

[sonarcloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
43 Code Smells

No Coverage information
0.0% Duplication

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✅ Build concoct 0.1.161 completed (commit dabdf93539 by @ldilley)

[AppVeyorBot]

✅ Build concoct 0.1.61 completed (commit dabdf93539 by @ldilley)