Initial work on #242
First version of source position information in error messages
Better layout for pretty printed values
Revert "Initial work on #242"

This reverts commit 1a087e746637af668dbcc8c55f83fefdafda4495.
Fix remaining bugs related to source position information
Pretty printer for let expressions. Only show first and last errors when not using -v
Revert "Revert "Initial work on #242""

This reverts commit c7d2699bc822d9ee3fcb433774f806ec2c1864ed.
Merge branch 'srcpos'
Bump version
Fix #332
Fix an issue with type decls in instances
Bump version
Include source name in SourcePos info
Extract errors module
Make compilation error type names generic
Module & decl error sources
Use ErrorStack everywhere
Add position info to most errors
Update release notes
Merge pull request #335 from garyb/sourcepos-errors

Add source positions to other errors