io::IO
possibly fix #2522
make comparison chains maximally short-circuiting. fixes #2467
maybe-temporarily restore the previous behavior of \\ in custom strings
this is better for regexes, so you don't need quadruple backslash.
un-breaks the regexes in path.jl.
combined with the new behavior of \", this has the nice bonus that regexes
now print even better than before. for example r"\\\"" does not get
printed correctly in v0.1.2.
Merge pull request #2521 from WestleyArgentum/local

io::IO
add test for 7909e3de17f6 (r"\u2200")
widen the sigatomic blocks around uv_write
deprecate logb to exponent. closes #2516
remove ::IO in 1-arg countlines where it did not belong
remove a few more ::IO in datafmt.jl
rename ref to getindex, assign to setindex!
closes #1484, closes #907
there are aliases in deprecated.jl to ease the transition
add filename to include_string. fixes #2483
doc rename ref and assign
Merge pull request #2533 from wlbksy/docrename

doc rename ref and assign
Merge branch 'master' into anj/linalg2

Conflicts:
	base/deprecated.jl
	extras/suitesparse.jl
import Base.convert in suitesparse.jl (from master)