Fix bug where isRegistered didn't handle sub-resources

#102

Bugfixes and performance improvements

#100 Cherry-pick lodash methods to reduce package size @igorbt
#99 Misc Typos @azu
#98 Fixed bug where a JSON error returned from server wasn't parsed on the client side. @davidhouweling
#95 Fixed bug where config on server would always be undefined @escalona
#93 Misc typos @escalona
#92 Clarify the config option in service calls @escalona
#91 Accessing invalid fetchr urls will handle errors nicely instead of throwing uncaught errors

Adding more debug information for error

v0.5.8

Release v0.5.8.

Add X-Requested-With header; fix retry bug; move default constructGetUri function to its own file

#84
#85

Adding more debug information for error

v0.4.15

Release v0.4.15.

Add X-Requested-With header; fix retry bug; move default constructGetUri function to its own file

#86

Error response type is now json

#80 - Error response by middleware is now a json object

Allow errors to set headers & Error responses is now json

Backporting:

#78, #79 - Allow error responses to set headers
#80 - Error response is a json object

Fix non-get request headers support in error case

v0.5.5

0.5.5

Support services sending headers with error case

v0.5.4

0.5.4