String-Tools-v0.18.270

Changes for version v0.18.270 - 2018-09-27

Change `define` to a defined value by using the constant `!!undef` (Which causes it work in both the string and numeric contexts correctly).
Added/improved several tests.
Added the `$SUBST_VAR` variable for the `subst()` function.
Added the `trim_lines()` function.

Various tools for manipulating strings.

To install String::Tools, copy and paste the appropriate command in to your terminal.

cpanm String::Tools

perl -MCPAN -e shell
install String::Tools

For more information on module installation, please visit the detailed CPAN module installation guide.

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