base/printf.jl: the sig_dec function isn't used and can be deleted.
printf: complete support for BigInts (implemented ini_dec) [#5756]
deprecate conversion of Array{T1} to Ptr{T2} if T1 != T2 && T2 != None (fix #6073)
A more robust error bound for the determinant. Remove Float16 from linalg tests. Add fallback condition number method.
fix #6068, invalid IR for constant conditions in some cases
Merge pull request #6079 from stevengj/pointerpurity

deprecate conversion of Array{T1} to Ptr{T2} if T1 != T2 && T2 != None
make fallback hypot() behave the same for inf and nan as standard implementations
fix #6074, macroexpander bug in `let`
fix show() of 1-argument calls to binary operators

we were doing this:

```
julia> :((%)(x))
:(x)
```
use LIBUV_INC so that USE_SYSTEM_LIBUV works
Merge pull request #5902 from JuliaLang/anj/detbound

A more robust error bound for the determinant.
make ranges and arrays unequal, faster hashing of ranges, fixes #5778

fix == and isequal of ranges to only compare by components when it is safe to do so
  (ranges with different types but == components can generate different elements)

add float32(x) etc. for FloatRange

don't show floating point Range objects using colons, since those construct FloatRanges
add missing root
Merge pull request #6085 from carnaval/missingroot

add missing root
Let floatx and complexx use convert. Fix similar for sparse matrices.
missing normalisation term in ifft doc
doc: fix and clarify documentation for the `parse` function.
Merge pull request #6088 from simonbyrne/fftdoc

missing normalisation term in ifft doc
Hopefully improved clarity of FFT documentation. Ref: #6088

- Use IDFT formula in documentation of ifft, instead of BDFT
- Typeset FFT, IDFT and BDFT fomulae in math blocks instead of inline
Fix for juliadoc package being out of scope.