The slice Foos is plural; it refers to multiple elements. The element Foos[i]
is the i'th Foo.

The previous "the endpoints are inclusive" comment seems confusing. It's true
that the bounding box's max X equals the right-most coordinate, which suggests
<= instead of <, but that node's coordinate is itself exclusive. Consider the
solid 1-pixel square: (0, 0), (64, 0), (64, 64), (0, 64) in fixed.Point26_6
coordinates. The right-most coordinate is 64, and the bounding box's max X
equals 64, but rasterizing that square only affects sub-pixels up to but not
including 64.

Instead, it seems accurate to follow the fixed.Rectangle26_6 description, in
that the max values are exclusive.

The zero value of a GlyphBuf is already perfectly usable.

These comments weren't updated when we went from 24.8 to 26.6.

Fixes issue 16.

LGTM=crawshaw
R=crawshaw
CC=golang-codereviews, philipz
https://codereview.appspot.com/209280043

hide the Hinter implementation in the freetype/truetype package.

LGTM=bsiegert
R=bsiegert
CC=golang-codereviews
https://codereview.appspot.com/58940043

The logic is a little clunky, but as before, let's get it right first,
then get it clean once we have a full battery of tests.

R=bsiegert
CC=golang-codereviews
https://codereview.appspot.com/50910043

to package truetype.

R=bsiegert
CC=golang-dev
http://codereview.appspot.com/6427062

R=dsymonds
CC=golang-dev
http://codereview.appspot.com/6202052

R=bradfitz
CC=golang-dev
http://codereview.appspot.com/6202051

Also update freetype/truetype for s/int/rune/.

R=rsc, bradfitz
CC=golang-dev
http://codereview.appspot.com/5505067

R=rsc, r
CC=golang-dev
http://codereview.appspot.com/5339048

R=rsc
CC=golang-dev
http://codereview.appspot.com/4996046

R=r
CC=golang-dev
http://codereview.appspot.com/4517137

R=adg, r2
CC=golang-dev
http://codereview.appspot.com/4040045

consistency with existing NewFooPainter functions.

Unbreak build from ColorImage change in the core image package.

R=adg
CC=golang-dev
http://codereview.appspot.com/2450041

context state. Also rename DrawText to DrawString.

R=r
CC=golang-dev
http://codereview.appspot.com/2208041

R=r
CC=golang-dev
http://codereview.appspot.com/2171045

Porter-Duff composition operator used. This saves a malloc when passing
an AlphaSrcPainter as a value of Painter interface type.

R=r
CC=golang-dev
http://codereview.appspot.com/2149044

A freetype.Context now has dst and src image setters and the notion of
a current point, instead of having to pass a painter and pt to DrawText.

R=r, rsc
CC=golang-dev
http://codereview.appspot.com/2169041

instead of at 1em above the baseline.

R=r
CC=golang-dev
http://codereview.appspot.com/2042041

just version 2. The FTL (Freetype Licence) is still available. This
matches the original Freetype library (written in C).

This only expands and does not further restrict the licensing options
available to users of the freetype-go library.

R=adg
CC=golang-dev
http://codereview.appspot.com/1731049

R=rsc
CC=golang-dev, rog
http://codereview.appspot.com/1686048

a Context can now take any Painter during DrawText.

R=r
CC=rog, golang-dev
http://codereview.appspot.com/1341041

R=rsc, r
CC=rog, golang-dev
http://codereview.appspot.com/1332041

R=r
CC=golang-dev
http://codereview.appspot.com/1236042

draw text onto an image.

This is a simple API that doesn't handle line breaking, ligatures,
right-to-left or vertical scripts, and other fancy features.

R=r, rsc
CC=golang-dev
http://codereview.appspot.com/1121045