Fix Go's 404 error
Alphabetize Go list
Add ISL to Machine Learning
Move ESL from Data Mining to Machine Learning
Merge pull request #669 from jdavis/master

Add ISL, change ESL to Machine Learning
Merge pull request #670 from Mouseion/patch-go

Fixes for Go list
Added Machine Learning books
Merge pull request #671 from yelinaung/master

Added Machine Learning books
Fixes #637
Javascript the rightwat
Added two books on PicoLisp
Update free-programming-books.md

Added Parrot/Perl 6 > Perl 6 Programming @ Wikibooks.org
Adding tryF#
Merge pull request #674 from Andrea/patch-1

Adding tryF#
Merge pull request #673 from DavMorr/patch-1

Update free-programming-books.md
Merge pull request #672 from marios-zindilis/master

Added two books on PicoLisp
Fixed anchor to PicoLisp
Merge pull request #675 from marios-zindilis/master

Fixed anchor to PicoLisp
Added book "Agile Java" to "Java" section

"Agile Java" links to a series of PDF files for individual chapters of the book.
Merge pull request #676 from RNanoware/master

Added book "Agile Java" to "Java" section