Migrated isapprox() to base
Added test suite for isapprox()
Documentation for isapprox()
Removed duplicate definitions of rtoldefault and atoldefault methods
Test and export hooks for isapprox
faster readcsv. fixes #3350
Simplified implementation for real nonfloats as well as for complex numbers
Updated documentation for isapprox()
fix trivial README confusion
remove some dead code in stream.jl
improve iobuffer truncate not to store more 0s than necessary
replace memio with IOBuffer
Merge branch 'master' of github.com:JuliaLang/julia
syntax error for non-unique arguments and/or static parameters
fixes #3432
Merge pull request #3433 from danluu/gcc_xor_clang

Clarify compiler depdencies
Fixes UVError bug in listen/accept
Merge pull request #3435 from danielmendel/fix-accept-uverror

Fixes UVError bug in listen/accept
Fix bugs in redirection operators

Also make tests use new syntax
Actually give the right deprecation
Merge pull request #3429 from tanmaykm/readcsv

faster readcsv. fixes #3350