SSMD::strip_ssmd should remove last pause of string if there is no space after it.

[mian-bilal]

Example:

SSMD::strip_ssmd "Hello ...2s World ...2s"

Expected result: Hello World
Actual result: "Hello World ...2s"

[machisuji]

Thanks for reporting the bug @mian-bilal. I just fixed the bug and some others I found. It's included in the latest version: 0.7.6