[feat] improve readability of errors

Let's not report 'bitmaskd is not running' in standalone mode.

• Resolves: #35 (closed)

added 3 commits

• ba5b82aa...34ed78a1 - 2 commits from branch leap:master
• e06c6811 - [feat] improve readability of errors

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added 2 commits

• 58f4ee75 - 1 commit from branch leap:master
• ff36a035 - [feat] improve readability of errors

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merged

mentioned in issue #62 (closed)