Fix handling of top two pixel rows in be_blur_c

5dd56af2 replaced our implementation of \be with xy-VSFilter's.
This error is not present in the xy-VSFilter code; it was introduced
by accident in a merge that was later squashed as part of 5dd56af2.

Note: the new \be reads in but does not write out
the first and last row and column of pixels.
Remove dirty pixels from ASM be_blur output

A loop initializer was missing, so output started one row too early.
A loop condition check was missing, so output sometimes stopped
one column too late.

Also remove a couple of dead assignments.
drawing: parse numbers as floats

Parse values as float and convert into 26.6 fixed point. This actually
simplifies scaling a bit.

Fixes #63.
Merge pull request #66 from grigorig/drawing-floats

drawing: parse numbers as floats
shaper: fix nasty sign bug in font functions

Fixes issue #68.
Don't crash on \fscx0 with non-zero \blur

Regression in commit 98707694.
Initialize \pbo for each event

Regression in commit 1f5eb5eb.
Fixes issue #74.
Update version info and changelog
Update README
Fixed headers in profile and test
Fix premature parser exit on }{ in drawing mode

Fixes #75.
Implement fast quad-tree rasterizer in C and x86/SSE2/AVX2

Signed-off-by: Rodger Combs <rodger.combs@gmail.com>
Merge branch 'master' into fonts