Added the ability to list available versionf of Perl to install
Merge remote branch 'trcjr/master' into command-available
enable parallel testing and document -j option
Merge branch 'dagolden/master' into develop
regen
attribute dagolden++ for https://github.com/gugod/App-perlbrew/pull/47
In the instruction messages, replace "$HOME" with "~" when possible.
avoid undef warnings on -j arg
update changelog.
tilde-ify one more message
Checking in changes prior to tagging of version 0.18.

Changelog diff is:

diff --git a/Changes b/Changes
index 2cc4df1..fe1e515 100644
--- a/Changes
+++ b/Changes
@@ -1,4 +1,4 @@
-NEXT:
+0.18:
 - Spotted and fixed by chad.a.davis++, an issue when bash set "noclobber" option,
   which breaks the creation of ~/.perlbrew/init. See https://rt.cpan.org/Ticket/Display.html?id=66518
 - A simple `perlbrew clean` command to clean build dir.
Use Devel::PatchPerl to make old perls build

Old perl releases have the tendency to not build anymore on modern platforms and
require some patches for things to work again. Devel::PatchPerl provides those,
as well as a little commandline helper to conveniently apply them. Use it.
deal with an edge case when people typed unknow short options.

For example:

    > perlbrew -l
    Unknown command: `_l`. Typo?

That "-l" was kept forever and the same error message keeps poping out
for all further perlbrew invocations.
No need to pass any options to `perlbrew env`

`perlbrew env` does not need nor recognize any of them.
regenerate the standalone executable.
update licence years
perlbrew available works, this time without extra dependancies
merge from trcjr
attribute trcjr++ for the available command.
version should match