Add generalized repmat function as repeat
Document repeat function

Extend ind2sub and sub2ind to accept a reusable array of indices
Expose rem1 and fld1, defined by analogy with mod1
Restore basic ind2sub definition
renamed finfer to code_typed
added code_lowered
renamed disassemble to code_llvm and code_native
Doc typo (thins -> things)
Update contributing.md (switch to "master" branch before editing)

Hi, the instructions didn't work for me and I found out I needed to switch to the "master" branch.  Hopefully this is the right branch for people to make edits.
Added radix sort
Fix #3939

also add deps/.gitignore line re: 625e055
Merge pull request #3948 from ihnorton/fix_3939

Fix #3939
multi.jl: refactor of worker management
 - fix/address comments by amitmurphy
 - avoid using Worker in manage(), .id and .config should suffice
 - force worker config to be passed around. ClusterManagers.jl has a pending update to accomodate this change
 - fix :cmd instance type in start_cluster_workers()
 - manage(:register) in a schedule block
Fix isdeprecated() call in doc/DocCheck.jl
Fix typo
Fix #3953
Merge pull request #3955 from sbebo/typo-fix

Fix typo
Replace amap with mapslices in cor
vec: when argument is already a vector don't reshape [#3953]
fix #3957 (PCRE not defined)
info: change the prefix of info() output to "INFO: "